Well in the book of 1 Corinthians chapter 5 (dated AD 53-57) Paul writes:

1 It is actually reported that there is sexual immorality among you, and of a kind that even pagans do not tolerate: A man is sleeping with his father’s wife. 2 And you are proud! Shouldn’t you rather have gone into mourning and have put out of your fellowship the man who has been doing this?

-and later-

9 I wrote to you in my letter not to associate with sexually immoral people— 10 not at all meaning the people of this world who are immoral, or the greedy and swindlers, or idolaters. In that case you would have to leave this world. 11 But now I am writing to you that you must not associate with anyone who claims to be a brother or sister[c] but is sexually immoral or greedy, an idolater or slanderer, a drunkard or swindler. Do not even eat with such people.

12 What business is it of mine to judge those outside the church? Are you not to judge those inside? 13 God will judge those outside. “Expel the wicked person from among you.”

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So it seems like that people in the church still struggled with that sort of thing, but it was condemned by the leaders like Paul.