You shall not commit adultery.
This is the provision on Sexual Immorality.
Related Bible Passages:
But I say unto you, that whosover looks on a woman to lust after her has broken wedlock with her already in his heart.
2 Timothy 2:22
Flee also youthful lusts; but follow righteousness, belief, love, peace, with them that call on El-YHWH out of a pure heart.
1 John 2:16
For all that is in the world, the lust of the flesh, and the lust of the eyes, and the pride of life, is not of the Father, but is of the world.
Lust not after her beauty in your heart, neither let her take you with her eyelids.
For the carnally minded is death; but to be spiritually minded is life and peace.