Matthew 5:28

But I say unto you that every one looking on a woman in order to lust after her hath already committed adultery with her in his heart.

James 1:14-15

but each one is tempted by his own lusts, being drawn out, and enticed.

Treasury of Scripture Knowledge

Summary

Lust not after her beauty in thine heart; neither let her take thee with her eyelids.

Bible References

Lust

Matthew 5:28
But I say unto you that every one looking on a woman in order to lust after her hath already committed adultery with her in his heart.
James 1:14
but each one is tempted by his own lusts, being drawn out, and enticed.