Gen. 4-6

Cain slew his brother Abel. While he was under a cloud of despair, God came to him and declared, “If you do what is right, will you not be accepted? But if you do not do what is right, sin is crouching at your door; it desires to have you, but you must rule over it.” [4:7]

Life can pull us in many different directions. The pull to gratify our flesh is always there, but God gives us the grace and power to resist. To be tempted is not a sin. Yielding to the temptation brings the downfall.

But every man is tempted, when he is drawn away of his own lust, and enticed. Then when lust hath conceived, it brings forth sin: and sin, when it is finished, brings forth death. Do not err, my beloved brethren. [James 1:14-16]

No temptation has overtaken you except what is common to mankind. And God is faithful; he will not let you be tempted beyond what you can bear. But when you are tempted, he will also provide a way out so that you can endure it. [1 Cor. 10:13]