Hebrews 3:13

Hebrews 3:13. But exhort one another daily, while it is called Today; lest any of you be hardened through the deceitfulness of sin.

If sin came to you openly proclaiming itself as sin, you would fight against it; but it is very cunning and deceitful and it gradually petrifies the heart and especially the heart of those who think that they will never provoke God by their sin. Pride has already begun to work in them; and where pride can work, every other sin finds elbow-room. God save us from the deceitfulness of sin!