Joshua 24:19 in the King James Version
And Joshua said unto the people, Ye cannot serve the LORD: for he is an holy God; he is a jealous God; he will not forgive your transgressions nor your sins.
Context
18 The LORD drove out from before us all the peoples, even the Amorites who lived in the land. Therefore we also will serve the LORD; for he is our God.”
19 Joshua said to the people, “You can’t serve the LORD, for he is a holy God. He is a jealous God. He will not forgive your disobedience nor your sins.
20 If you forsake the LORD, and serve foreign gods, then he will turn and do you evil, and consume you, after he has done you good.”