Matthew 5:28

But I say to you, everyone who looks at a woman with an improper sexual desire for her [body], has already been sexually unfaithful to his mate in his heart.

James 1:14-15

But each person is tempted when he is lured and enticed by his own evil desire.

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 to you, everyone who looks at a woman with an improper sexual desire for her [body], has already been sexually unfaithful to his mate in his heart.
James 1:14
But each person is tempted when he is lured and enticed by his own evil desire.