Acts 15:20 We write unto them, that they abstain from fornication.
Rom. 13:"13 Let us walk honestly, as in the day; not in rioting and drunkeness, not in chambering and wantonness.
1 Cor. 5:11 I have written unto you not to keep company, if any man that is called a brother be a fornicator... with such an one no not to eat. vs. 9,10
1 Cor. 6:13 Now the body is not for fornication, but for the Lord; and the Lord for the body. 15. Know ye not that your bodies are the members of Christ? shall I then take the members of Christ and make them the members of an harlot? God forbit. 18 Flee forniction. Every sin that a man doeth is without the body; but he that commiteth fornication sinneth against his own body.
1 Cor. 10:8 nEITHER LET US COMMIT FORNICATION, AS SOME OF THEM COMMITTED, AND FELL IN ONE DAY THREE AND TWENTY THOUSAND.
EPH. 4:17 tHIS i SAY THERFORE, AND TESTIFY IN THE lORD, THAT YE HENCEFORTH WALK NOT AS OTHER gENTILES WALK, IN THE VANITY OF THEIR MIND; 19. wHO, BEING PAST FEELING, HAVE GIVEN THEMSELVES OVER UNTO LASCIVIOUSNESS, TO WORK ALL UNCLEANNESS WITH GREEDINESS. 20. bUT YE HAVE NOT SO LEARNED cHRIST;
EPH. 5:3 But fornication, and all uncleanness, let it not be once named among you, as becometh saints, 11. Have no fellowship with the unfruiful works of darkness, but rather reprove them. 12. For it is a shame even to speak of those things which are done of them in secret.
Col. 3:5 Mortify therfore your members which are upon the earth; fornication, uncleanness, inordinate affection, evil concupiscensce.
1 Thes. 4:3 This is the will of God, evben your sanctification, that ye should abstain from fornication. 4. that every one of you should know how to possess his vessel in sanctification and honour; 5. Not in the lust of concupiscence, even as the Gentiles which know not God; 7. For God hath not called us unto uncleanness, but unto holiness.
I hope that helps.