Matthew 5:28

But I say to you, Whoever looks upon a woman to cherish desire for her, has already committed adultery with her in his heart.

Matthew 12:35

The good man, out of his good treasury, brings forth good things; and the evil man, out of his evil treasury, brings forth evil things.

Matthew 15:19

For from the heart come evil reasonings, murders, adulteries, lewd actions, thefts, false testimonies, impious words.

Treasury of Scripture Knowledge

Summary

And let none of you imagine evil in your hearts against his neighbour; and love no false oath: for all these are things that I hate, saith the LORD.

Bible References

Let

Matthew 5:28
But I say to you, Whoever looks upon a woman to cherish desire for her, has already committed adultery with her in his heart.
Matthew 12:35
The good man, out of his good treasury, brings forth good things; and the evil man, out of his evil treasury, brings forth evil things.
Matthew 15:19
For from the heart come evil reasonings, murders, adulteries, lewd actions, thefts, false testimonies, impious words.