1 Thessalonians 4:5-9

not in lustful passion, like the Gentiles who do not know God;

and that no one violate the rights and take advantage of his brother or sister in the matter, because the Lord is the avenger in all these things, just as we also told you previously and solemnly warned you.

For God has not called us for impurity, but in sanctification.

Therefore, the one who rejects this is not rejecting man, but the God who gives His Holy Spirit to you.

Now as to the love of the brothers and sisters, you have no need for anyone to write to you, for you yourselves are taught by God to love one another;