Is Unbelief a Sin?

In many of our churches, we regard unbelief as a kind of harmless weakness. “Well, I don’t believe, but after all, does God really expect me to?” The New Testament doesn’t call unbelief a harmless weakness; it calls it a sin.

And when we see that, we’re ready to get rid of unbelief and to open the way, through believing God, to receive what He has for us. I want to read from Hebrews chapter 3, verses 12 and 13. This is addressed specifically to Christians.

“Beware, brethren, lest there be in any of you an evil heart of unbelief, in departing from the living God; but exhort one another daily, while it is called ‘Today,’ lest any of you be hardened through the deceitfulness of sin.”

You know what this writer calls unbelief? He calls it evil, and he calls it sin.