When my son was younger, he was determined to do something he knew was wrong. When I caught him before he could put his plan into action he protested, “But Mom I didn’t actually do it!” “That’s not the point.” I told him, “You wanted to do it – that’s the heart of the problem.
Human nature has reduced “sin” to an act – a thing we do, while the Bible tells us that sin is a condition of the heart – our desires. When Jesus taught about adultery in Matthew 5:27-28 He said that the sin of adultery is committed when the desire arises – “anyone who looks at a woman lustfully has already committed adultery with her in his heart.” James identified the pattern of sin in 1:14-15 as a progression from one’s “own evil desire,” to enticement, then to the action. Sin clearly starts in the heart. After his sin with Bathsheba and the murder of her husband Urriah, David pleaded for God to “create in me a pure heart” (Ps. 51:10) for he knew that it was his heart that had led him astray. Jesus said, “Where your treasure is, there your heart will be also” (Mat. 6:21), meaning we will pursue at all costs what our heart desires. If that desire is for sin, you can bet your hands, feet, and body will follow. Jesus also said only “the pure in heart . . . will see God” (Mat. 5:8). That should be incentive enough.
A pure heart recoils at the thought of disobeying and dishonoring God and breaking fellowship. It pursues the heart of God, which never leads to sin. A pure heart runs from temptation (2 Tim 2:22). Does that mean if you struggle with sinful desires You don’t have a heart for God? No – Paul attested to the battle within himself (Rom. 7:15-23) and I know well my own tug-of-war with sin. But it’s not unwinnable. You just need some Help.
Beloved, Are you weary of toying with the sinful desires of your heart? Victory comes as you allow the Word of God and the Spirit of God to purify your heart day by day. God isn’t just after your behavior Beloved, He is after your heart. When you “delight yourself in the Lord,” that is when He is all your heart longs for, then “He will give you the desires of your heart” (Ps 37:4). He will give you Himself.