Join us again tomorrow for live coverage of another five crucial games in the Scottish Premiership.
- Forrest and Johansen score for Celtic
- Top beat bottom in Scottish Premiership
- Celtic eight points clear at top
- St Mirren four points adrift at foot
Thanks for your company tonight when Celtic took another giant stride towards retaining the Scottish Premiership title and a domestic treble. St Mirren, meanwhile, were pushed closer to the abyss of relegation.
"They were defending very deep and very brave. it was difficult to break them down.
"We were patient but were not clinical enough, but it was a fantastic first goal.
"After that, we controlled the game and I don't think they had a goal chance.
"James Forrest had a hard time against the full-back, but were were not going to take him off.
"We have been patient with him and we are getting the reward for it."
"The boys were excellent and showed the heart and desire I asked from them.
"I was just disappointed with the goals. It was a lapse in concentration for the first and I don't think it was a penalty for the second.
"I thought we might have held on, but once you lose the first goal against a quality side like Celtic, it is always going to be difficult.
"Now we need to take every game as it comes and win every single one of them."
"St Mirren defended well and made it tough for Celtic. In the second half, Celtic were looking frustrated until James Forrest popped up just before it looked like he was coming off. But St Mirren didn't really create anything tonight."
St Mirren have still only won once at home this season and, with seven games left, remain four points adrift of Motherwell at the bottom of the table. That position could become worse tomorrow should Well pick up anything away to Kilmarnock.
Without being terribly impressive - perhaps not needing to be - Celtic take the three points to stretch their lead over Aberdeen at the top of the Scottish Premiership to eight points.
It almost gets worse for St Mirren as Celtic substitute Gary Mackay-Steven flashes a superb drive on the turn just wide.
Stuart Gillespie: "Any chance Pat Bonner can say one of our players is about to be subbed so he can score?"
St Mirren manager Gary Teale had played his last cards seconds before the second goal, with veteran striker Stevie Thompson and Emmanuel Sonupe coming on for Stevie Mallan and James Dayton. It looks like the change came too late and there is no way back now for the home side.
Celtic win a penalty when James Forrest's shot strikes the hand of Viktor Genev in front of goal and Stefan Johansen scores from the spot.
Gary Mackay-Steven comes into the Celtic midfield in place of Kris Commons, while 18-year-old Lewis Morgan replaces Kieran Sadlier in the home midfield.
"You almost feel sorry for St Mirren. They have had the best performers on the night and they have nothing to show for it."
Instead of being substituted, James Forrest switches to the other side of the park as Adam Matthews goes off to be replaced with Efe Ambrose at right back and Nir Bitton comes on for Stuart Armstrong.
It looked like James Forrest was about to be hooked by Celtic manager Ronny Deila, but instead the winger side-foots the opening goal from Adam Matthews' low cross after a fine Scott Brown through ball.
"Jeroen Tesselaar has James Forrest in his pocket and I'm surprised Ronny Deila has not taken the winger off."
St Mirren defender Viktor Genev shows ambition by striding out from the back and, when the ball breaks to Yoann Arquin, the striker's volley from all of 30 yards is too ambitious and too wide.
St Mirren fans are enraged as Scott Brown blatantly bundles down Stevie Mallan. As referee Alan Muir waves play on, the supporters further voice their displeasure as Anthony Stokes effort on the break almost deflects into the home net.
The home side are stung into action themselves and Stevie Mallan gives it his trademark thump from long range, but the midfielder's effort slips wide after almost catching goalkeeper Craig Gordon unawares.
St Mirren survive a bit of pinball in their six-yard box after Virgil van Dijk heads down from a corner, but the home side eventually clear and Kris Commons fires wastefully into the side netting.
Celtic have started the second half with plenty of intent as, once more, Kris Commons sets up a chance, but Anthony Stokes' toe-poke from the edge of the penalty area is easily held by goalkeeper Mark Ridgers.
Has Stuart Armstrong been stung by that bit of social media criticism at half time? The Celtic midfielder is the first to threaten in the second 45 with a curling effort on the turn, but it flies well wide.
Celtic go huddle happy with another team gathering before kicking off the second half.
bringthemonjpn: "Very tight first half. St Mirren not going to lie down without getting a point."
James in Giffnock: "St Mirren fighting for their lives in the Scottish Premiership and it shows. This is no walk in the park for Celtic."
Fraser Vandal: "Stuck in England with Radio Scotland for match action. Probably best not watching what Celtic might do to us!" Well Fraser, so far your team are half way to an unexpected and deserved point.
Mark, Ayr: "What's with Stuart Armstrong? He looks so disinterested tonight, Very weird." Maybe the Celtic midfielder is worrying for wee Jackie McNamara amid the publicity over his transfer fee from Dundee United.
St Mirren are growing in confidence and Kieran Sadlier fires from long range, but his shot his straight into the arms of goalkeeper Craig Gordon.
St Mirren midfielder Jim Goodwin is shown a yellow card after a reckless challenge on Scott Brown. The Irishman is lucky he is so slow as he not only misses the ball but the Celtic captain. He is also fortunate his feet were not off the ground or that could have been another red card to add to his impressive collection.
The home side's calls for a spot kick are ignored as Stevie Mallan goes down in the penalty box. The ball falls to Yoann Arquin, but the St Mirren striker's drive is weak and straight at goalkeeper Craig Gordon.
Mark Ridgers again comes to St Mirren's rescue as Kris Commons once more splits the centre of the home defence. This time, instead of shooting, the midfielder sets up James Forrest and the winger's drive from 14 yards is pushed away for a corner by the goalkeeper.
First real threat from St Mirren as Jeroen Tesselaar makes a superb tackle before setting up Kieran Sadlier, who shows some neat footwork before firing in a dangerous cross. However, Stevie Mallan's header does not have enough power to trouble goalkeeper Craig Gordon.
BBC Scotland at St Mirren Park
"Celtic have enjoyed plenty of possession of the ball but have found St Mirren to be awkward to break down. Kris Commons has been the principal threat by dropping off a very deep and packed St Mirren defence. For the home side, the only hope resides on the liveliness of James Dayton and the midfield composer of Stevie Mallan and John McGinn."
Kris Commons ought to have Celtic ahead after found unmarked by a Stuart Armstrong ball into the penalty box. Goalkeeper Mark Ridgers does well to beat the ball away, but the midfielder ought to have found one of the corners from 14 yards out.
St Mirren are giving Kris Commons too much space, but they are fortunate that the midfielder batters his effort into the side-netting after advancing unchallenged into the penalty box.
At the moment, it is Celtic dominating possession, as you might expect, with Yoann Arquin looking an increasingly isolated figure up front for the home side.
Leigh Griffiths has lost his place in the Celtic forward line and the striker probably hasn't done his cause much good by being caught by the TV cameras tucking into a certain brand of Scottish teacake in the dugout.
G Maclaughlan: "Andrew Robertson was identified by Jackie and sold after one season for a good fee. Peter Houston left because he thought the future was bleak, Jackie brought on Ryan Gauld. For me, he deserves to be rewarded for adding value to team." Support there for Dundee United manager Jackie McNamara over those bonuses.
Celtic midfielder Kris Commons tries an audacious drive from an almost impossible angle after jinking to the by-line. Mark Ridgers is almost caught out by the attempt aimed at the gap left between his body and the near post, but the goalkeeper manages to beat the ball away for a corner.
Anthony Stokes is lucky to get away without a yellow card after hauling back St Mirren winger James Dayton.
Anthony Stokes is immediately into the action, finding himself in space as he gathers a long ball into the St Mirren penalty box, but the striker screws his low drive wide on the turn.
BBC Scotland at St Mirren Park
"A game of contrasts at St Mirren Park. Celtic, the league leaders, are playing with confidence and momentum, and can afford to put their in-form striker Leigh Griffiths on the bench and still start with a player of Anthony Stokes' calibre up front. They are chasing glory this season, whereas, for the home side, the only thought is of safety. They are four points adrift at the bottom and have struggled to score goals and stop conceding them all season. The expectation, certainly, is of a comfortable victory for Celtic, even though St Mirren are fighting for their lives."
Celtic's players in all dark green emerge from their traditional huddle as St Mirren in their traditional black and white stripes kick off in Paisley.
The bugle calls as the gladiators, sorry, the players enter the St Mirren Park pitch.
Alan St Mirren fan: "Looks like the manager listens to the fans - no Thompson and Sandler playing."
"Celtic have hit form at the right time and Ronny Deila has got his formation right. They have been steamrolling everybody and I don't expect anything else tonight."
"It was tough to pick a team today, but we think we have the right one.
"Anthony Stokes has been very good in training and we want to give him a chance up front.
"Adam Matthews is a very good full-back and an important player for us.
"It is going to be a tough game, but I am looking for a performance and if we win with a bad performance, I will be angry."
"I think this is a huge game for St Mirren. We don't expect them to win the game, but they need to put in a performance. If they get turned over tonight, the confidence will be really down."
If you want to read more about that Dundee United statement clarifying manager's Jackie McNamara's bonuses, you can read it here.
Stuart Nicoll: "Ha ha, what's today's date - the 1st April?"
Buffalo Celtic: "Absolutely deluded."
We are assuming that these tweets are in response to Rangers manager Stuart McCall's suggestion that his side could challenge for European qualification next season rather than the Virgil van Dijk's claim that he is not looking for a move away from Celtic!
Celtic manager Ronny Deila has also made several changes - four in fact. Nir Bitton had been an injury doubt before playing for Israel in midweek and drops out of midfielder along with Gary Mackay-Steven, while Efe Ambrose and John Guidetti also miss out. Adam Matthews replaces Ambrose at right-back after his recovery from injury, Anthony Stokes is given Guidetti's role up front after returning from suspension, while James Forrest and Kris Commons will add to the creativity in midfield.
The surprising news from St Mirren is that veteran striker Steven Thompson has been left out the starting line-up, with defender Sean Kelly and forward Alan Gow also dropping out. Yoann Arquin is on his own up front, with Kieran Sadlier coming into midfield and Marc McAusland in defence after recovering from injury. Manager Gary Teale said of Thompson: "I just felt I wanted to freshen things up. It's great we've got competition in the squad now."
"I felt after the performance at St Johnstone I needed to go and look at a few things on the training ground.
"Hopefully the boys will show that tonight.
"Everybody outwith our own camp is writing us off, but we'll use that as motivation.
"We need to show the fans how much the St Johnstone game hurt us."
St Mirren: Ridgers, Naismith, McAusland, Genev, Tesselaar, Goodwin, Dayton, Mallan, McGinn, Sadlier, Arquin. Subs: Kelly, Gow, Thompson, Reilly, Sonupe, Morgan, Wilks.
Celtic: Gordon, Matthews, van Dijk, Denayer, Izaguirre, Brown, Johansen, Forrest, Commons, Armstrong, Stokes. Subs: Ambrose, Biton, Guidetti, Mackay-Steven, Zaluska, Griffiths, McGregor.
Referee: Alan Muir
And remember that you can listen to live match commentary of tonight's match from St Mirren Park on BBC Radio Scotland 810MW.
Well, how do United fans feel about that? Do Celtic fans think Virgil van Dijk still be with them next season? Can Gary Locke steer Kilmarnock to the top six? Will Rangers qualify for Europe - will they even be in the Premiership - next season?
Give us your thoughts #bbcscotfootball, or text at 80295, or comment on the BBC Sport Scotland Facebook page.
Breaking news from Dundee United, who have issued a statement following a newspaper article claiming that manager Jackie McNamara has benefited financially from the sale of Ryan Gauld to Sporting Lisbon, Andy Robertson to Hull City and Gary Mackay-Steven and Stuart Armstrong to Celtic. McNamara has waived a confidentiality clause in his contract to allow the club to clarify that, while he does receives some bonuses connected with transfers, he is not involved in such negotiations. United also stress that he had not received anything like the reported £500,000. More on that to follow.
And Celtic defender Virgil van Dijk insisted that he is not targeting an exit from the Glasgow club this summer despite continued transfer speculation surrounding the Dutchman.
Meanwhile, Gary Locke was confirmed this morning as Kilmarnock manager on a permanent basis and immediately targeted being a top-six side, if not this season then certainly in the coming ones.
Talking of challenging Celtic, Stuart McCall, the manager of traditional Glasgow rivals Rangers, said today he expects the Ibrox side - and Hearts - to be challenging for European qualification next season should they join the Edinburgh outfit by winning promotion this term.
It's not as if Ronny Deila's side go into the game lacking motivation of their own. Yes, they are strong favourites to retain the title and are five points clear at the top with a game in hand, but they won't want to give second-top Aberdeen renewed hope as they have shown themselves capable of giving the Glasgow side a fright until falling slightly off the pace in recent weeks.
Facing leaders Celtic is not the kind of match St Mirren will relish as their desperation for points heightens, starting tonight four points adrift of Motherwell at the foot of the table and a further three adrift of Ross County.
The cold winds of winter have yet to be extinguished by the coming of spring. Whether or not climate change is to blame for the frosty temperatures, there is no denying that it is heating up at the bottom of the Scottish top flight.
Welcome to our live text coverage of tonight's Good Friday fixture as top visits bottom in the Scottish Premiership. But who will it be good for? Champions-elect Celtic or the blundering Buddies?