1 Corinthians 5:1; 1 Corinthians 10:20; 1 Corinthians 12:2

1 Corinthians 5:1

1 It is reported commonly that there is fornication among you, and such fornication as is not so much as named among the Gentiles, that one should have his father's wife.

1 Corinthians 10:20

20 But I say, that the things which the Gentiles sacrifice, they sacrifice to devils, and not to God: and I would not that ye should have fellowship with devils.

1 Corinthians 12:2

2 Ye know that ye were Gentiles, carried away unto these dumb idols, even as ye were led.