1 Corinthians 5:1-6

Sexual Immorality in the Church

It is actually reported that there is sexual immorality among you, and sexual immorality of such a kind as does not exist even among the Gentiles, that someone has ^ahis father’s wife. 2 And ¹you ^ahave become puffed up and ²have not ^bmourned instead, so that the one who had done this deed would be ^cremoved from your midst.
3 For I, on my part, though ^aabsent in body but present in spirit, have already judged him who has so committed this, as though I were present: 4 ^ain the name of our Lord Jesus, when you are assembled, and ¹I with you in spirit, ^bwith the power of our Lord Jesus, 5 ^adeliver such a one to ^bSatan for the destruction of his flesh, so that his spirit may be saved in ^cthe day of ¹the Lord.
6 ^aYour boasting is not good. ^bDo you not know that ^ca little leaven leavens the whole lump?