But fornication and all uncleanness or covetousness, let it not even be named among you, as is fitting for saints; Eph 5:3

But among you there must not be even a hint of sexual immorality, or of any kind of impurity, or of greed, because these are improper for God's holy people. Eph 5:3

Flee from sexual immorality. All other sins a man commits are outside his body, but he who sins sexually sins against his own body. 1 Cor 6:18

"Food for the stomach and the stomach for food"–but God will destroy them both. The body is not meant for sexual immorality, but for the Lord, and the Lord for the body. 1Cor 6:13

Let us behave decently, as in the daytime, not in orgies and drunkenness, not in sexual immorality and debauchery, not in dissension and jealousy. Rom 13:13

Men of perverse heart shall be far from me; I will have nothing to do with evil. Ps 101:4

Now these things occurred as examples to keep us from setting our hearts on evil things as they did. Do not be idolaters, as some of them were; as it is written: "The people sat down to eat and drink and got up to indulge in pagan revelry." We should not commit sexual immorality, as some of them did--and in one day twenty-three thousand of them died. We should not test the Lord, as some of them did--and were killed by snakes. And do not grumble, as some of them did--and were killed by the destroying angel. (see Sodom).

These things happened to them as examples and were written down as warnings for us, on whom the fulfillment of the ages has come. So, if you think you are standing firm, be careful that you don't fall! No temptation has seized you except what is common to man. And God is faithful; He will not let you be tempted beyond what you can bear. But when you are tempted, He will also provide a way out so that you can stand up under it. 1Cor 10:6-13 

"Everything is permissible for me"--but not everything is beneficial. "Everything is permissible for me"--but I will not be mastered by anything (except the Lord Jesus Christ.). "Food for the stomach and the stomach for food"--but God will destroy them both. The body is not meant for sexual immorality, but for the Lord, and the Lord for the body. By His power God raised the Lord from the dead, and He will raise us also. Do you not know that your bodies are members of Christ Himself? Shall I then take the members of Christ and unite them with a prostitute? Never! Do you not know that he who unites himself with a prostitute is one with her in body? For it is said, "The two will become one flesh." But he who unites himself with the Lord is one with Him in Spirit.

Flee from sexual immorality. All other sins a man commits are outside his body, but he who sins sexually sins against his own body. Do you not know that your body is a temple of the Holy Spirit, Who is in you, Whom you have received from God? You are not your own; you were bought at a price. Therefore honor God with your body. 1 Cor 6:12-20

Everything is permissible"--but not everything is beneficial. "Everything is permissible"--but not everything is constructive. Nobody should seek his own good, but the good of others. 1 Cor 10:23,24

Do not be yoked together with unbelievers. For what do righteousness and wickedness have in common? Or what fellowship can light have with darkness? What harmony is there between Christ and Belial? What does a believer have in common with an unbeliever? What agreement is there between the temple of God and idols? For we are the temple of the living God. As God has said: "I will live with them and walk among them, and I will be their God, and they will be my people." "Therefore come out from them and be separate, says the Lord. Touch no unclean thing, and I will receive you." "I will be a Father to you, and you will be my sons and daughters, says the Lord Almighty." 2Cor 6:14-18

You adulterous people, don't you know that friendship with the world is hatred toward God? Anyone who chooses to be a friend of the world becomes an enemy of God. James 4:4 For, as I have often told you before and now say again even with tears, many live as enemies of the cross of Christ. Their destiny is destruction, their god is their stomach, and their glory is in their shame. Their mind is on earthly things. Phil 3:18,19 Once you were alienated from God and were enemies in your minds because of your evil behavior. Col 1:21 For if, when we were God's enemies, we were reconciled to Him through the death of His Son, how much more, having been reconciled, shall we be saved through His life! Rom 5:10