Thank you Danceswithwarthogs.
"...(a minority) of men in churches who are very devout in church but use the bible to justify being inflexible and misogynistic at home (hope he's not one of these)" Absolutely, this is not the current teaching of most UK churches but you do still come across it, sadly!
I think Jellybellyqueen your dh is giving his kids a really bad view of what faith is all about. He could do the religious stuff at church but also do some things around Christmas at home with the kids, make a nativity scene from cut outs/models/even junk modelling, and tell the story and why it is important. How ordinary the baby was, but how special. Lots of nice messages even if one is not very religious.
I decided long ago Santa only brings one present per child in our house, easier to hide and we as parents get the credit for all but one gift! I agree with others re the wrapping. Can you wrap a few presents each night in the run up to Christmas and then as FeistyColl says "Wrapped presents then go back wherever it was that the unwrapped presents were kept....." But again, this is not the main issue, is it?
Your dh has abdicated himself from family life to some extent, he has abandoned you in one sense, not for one night a year but emotionally and practically to some degree and he is hurting you.
In your shoes I would grit my teeth, get through this season as best I could and then try and engage your dh in turning things around. You've been together a long time and I am sure you had/have genuine love, but your dh has IMHO 'got lost' in his faith, he has allowed it to make a negative impact on himself and his part of the family, it is alienating him from you, you from him, and will undoubtedly impact the kids. As a Christian this is alarming and sad, and I really feel for you. I just want to wish you all the best OP. 