I know a godly man, some of his eight children are my age. He’s very devout, very active in his church, dutifully raised the kids in their faith, and mostly home schooled them. AFAIK, he’s still faithful to his wife after 30 years.
As for the kids, three have had children out of wedlock. One has gotten married and has now divorced. Two are gay...so far. The kids under 12 seem to be well-behaved (as did the older ones when they were under 12).
He’s depressed and convinced that several of his kids are bound for hell.
There are no guarantees. You just try hard and pray hard and don’t give up.