Sexual relationships before and outside of marriage
"Flee from sexual immorality"
Contraception
"Be fruitful and multiply"
Marriage
"Therefore a man shall leave his father and his mother and hold fast to his wife, and they shall become one flesh"
Divorce and remarriage
"Everyone who divorces his wife and marries another commits adultery, and he who marries a woman divorced from her husband commits adultery"
Nature of families
"But if anyone does not provide for his relatives, and especially for members of his household, he has denied the faith and is worse than an unbeliever"
Purpose of families
"Train up a child in the way he should go; even when he is old he will not depart from it"
Gender equality
"There is neither Jew nor Greek, there is neither slave nor free, there is no male and female, for you are all one in Christ Jesus"