Psalm 24:3-4

Who may ascend onto the mountains of the Lord? And who may stand in His holy place? He who has clean hands and a pure heart, who has not lifted up his soul to what is false, nor has sworn (oaths) deceitfully.  

God judges the intent of the heart, whether we keep our hands clean and hearts pure. When sin comes knocking at the door, God is there to help. God tells us to resist all sin and submit to Him, and the devil will flee. Our hearts and actions will follow when we keep a faithful attitude toward God.