Romans 6:16

Don’t you know that when you offer yourselves to someone as obedient slaves, you are slaves of the one you obey—whether you are slaves to sin, which leads to death, or to obedience, which leads to righteousness? niv

Matthew 5:27-28

You have heard that it was said, 'You shall not commit adultery.' But I tell you that anyone who looks at a woman lustfully has already committed adultery with her in his heart. niv

Psalm 119:9-11

9 How can a young person stay on the path of purity? By living according to your word. 10 I seek you with all my heart; do not let me stray from your commands. 11 I have hidden your word in my heart that I might not sin against you.

Matthew 26:41

Watch and pray so that you will not fall into temptation. The spirit is willing, but the flesh is weak. niv