Bible verse(s) on children in divorce?

when i was like 11, i came across a section in the bible about women who already have children and get remarried, and i remeber it saying something about that the woman should value her children from the previous relationship above her husband. my step-father feels that the exact opposite should happen, he also likes to go around spouting off scripture and i want to be able to present this evidence so i can put an end to at least some of his stupidity.