1 Corinthians 4:7

4:7 For who concedes you any superiority? What do you have that you did not receive? And if you received it, why do you boast as though you did not?

1 Corinthians 7:14

7:14 For the unbelieving husband is sanctified because of the wife, and the unbelieving wife because of her husband. Otherwise your children are unclean, but now they are holy.