Noah took 7 sheep so they could eat one of them while they were afloat in the storm.
2 unclean to repopulate.
7 clean. 3 pair to repopulate livestock and one to eat.
I'm not religious but that is really well written I think. Good retrospective belief fore thought! :)
Just about your card shuffle:
You said: 'I'm going to do something that has not been done since the beginning of time'
You then said that the pack was particular sequence for the first time since the beginning of time.
I say random chance could bring up that same sequence on the very next shuffle although the possibilities against it are enormous.