Paul wrote the letter to the Corinthians.
1Co 6:9 Know ye not that the unrighteous shall not inherit the kingdom of God? Be not deceived: neither fornicators, nor idolaters, nor adulterers, nor effeminate, nor abusers of themselves with mankind,
1Co 6:10 Nor thieves, nor covetous, nor drunkards, nor revilers, nor extortioners, shall inherit the kingdom of God.
1Co 6:11 And such were some of you: but ye are washed, but ye are sanctified, but ye are justified in the name of the Lord Jesus, and by the Spirit of our God.
nor effeminate; or "soft", or, as the Syriac renders it, מחבלא, "corrupters"; that is, of themselves, by voluntary pollution, such as are guilty of the sin of Onan, Gen_38:8.
Nor abusers of themselves with mankind; sodomites.