1 Thessalonians 4

This is the will of God, your holiness: that you refrain from immorality, that each of you know how to acquire a wife for himself in holiness and honor, not in lustful passion as do the Gentiles who do not know God;

For God did not call us to impurity but to holiness. Therefore, whoever disregards this, disregards not a human being but God, who (also) gives his holy Spirit to you.

1 Thessalonians 4:3-5, 7-8