1 Corinthians 6:18-20

Flee zenut! “Every chet is outside the body,” (you say). But the one guilty of zenut commits chet against the body itself. Or have you no da'as that your body is a Heikhal HASHEM of the Ruach Hakodesh in you, whom you have from HASHEM, and you are not your own? For [the Geulah redemption of] you [from the Golus of Chet] was purchased with a price; therefore, bring kavod to HASHEM with your gufot.