1 Thessalonians 4:3-7

For this is the will of God, that you be sanctified [separated and set apart from sin]: that you abstain and back away from sexual immorality; that each of you know how to control his own body in holiness and honor [being available for God’s purpose and separated from things profane], not [to be used] in lustful passion, like the Gentiles who do not know God and are ignorant of His will; and that [in this matter of sexual misconduct] no man shall transgress and defraud his brother because the Lord is the avenger in all these things, just as we have told you before and solemnly warned you. For God has not called us to impurity, but to holiness [to be dedicated, and set apart by behavior that pleases Him, whether in public or in private].