1 Corinthians 2:14

2:14 The unbeliever does not receive the things of the Spirit of God, for they are foolishness to him. And he cannot understand them, because they are spiritually discerned.

1 Corinthians 7:15

7:15 But if the unbeliever wants a divorce, let it take place. In these circumstances the brother or sister is not bound. God has called you in peace.

1 Corinthians 10:27

10:27 If an unbeliever invites you to dinner and you want to go, eat whatever is served without asking questions of conscience.

1 Corinthians 14:24

14:24 But if all prophesy, and an unbeliever or uninformed person enters, he will be convicted by all, he will be called to account by all.