To continue a recent theme, it turns out Martin O'Neill does indeed still have a few wonders left up his sleeve.
I floated the notion on these pages last week that he must be flat out of miracles. Apparently not.
Arguably one of the weakest Celtic sides to take to Ibrox in the past couple of decades still managed to grind out a famous cup win, albeit soured by infamy from both ends shortly thereafter.
Credit must go to the players, particularly the defensive unit, for an extraordinary display of defiance. More credit, however, must be reserved for the manager who has, like a surgeon in intensive care, completely restored the fragile patient's backbone.
A Celtic side that was weak, error prone and easily beaten has, since O'Neill's second coming, become strong, disciplined and resolute.
Entertaining and free-flowing they are not, but winning by any means necessary will do at present. The Northern Irishman is delivering in spades on that front.
When Celtic lost calamitously at home to Stuttgart last month before crumbling on their own ground against Hibs, their season was hanging by a thread. Facing four games in 11 days in Germany, Govan and Aberdeen, the job appeared Herculean.
The greatest of Greek heroes was given 12 seemingly impossible tasks. O'Neill has one fewer to navigate as there will be 11 matches left in Celtic's season should they reach the Scottish Cup final.
He doesn't have to slay the Hydra or Nemean Lion but he does, once again, have to extract every ounce of quality, energy and resilience from a squad that looks out on its feet.
Literally, in some instances. While Kieran Tierney's absence from the weekend derby win may be rectified by the time Motherwell pitch up to Celtic Park on Saturday, it looks unlikely captain and talisman Callum McGregor will be fit as quickly.
The number of games he misses may well have a close correlation to the team's chances of silverware. Making O'Neill's job harder still as he eyes the last in a series of really big games.
With the greatest respect to Dundee and St Mirren, Celtic's toughest pre-split match is the Steelmen's imminent visit. Win that and Celtic would be within two points of leaders Hearts before they kick off at Kilmarnock this weekend.
Picture that scenario. When Derek McInnes' men saw off Aberdeen at Tynecastle 10 days ago, Celtic were nine points adrift as they prepared to head across the city for the first of two potentially season-defining derbies on away soil.
Victory on Saturday brings the gap down to just a couple of points, at least for a few hours. The champions' midweek commitments are no more. It's one match a week for the next two months.
Five of their remaining nine league games are likely to be at Parkhead. Like an exhausted marathon runner finally getting a clear view of the finish line, the next task for Celtic's modern-day Hercules is to summon the superhuman collective strength required to hunt down the long-time leaders.
