19 Joshua said to the people, “You are not able to serve the LORD. He is a holy God; he is a jealous God. He will not forgive your rebellion and your sins.

Read Joshua 24:19 Using Other Translations

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.
But Joshua said to the people, "You are not able to serve the LORD, for he is a holy God. He is a jealous God; he will not forgive your transgressions or your sins.
Then Joshua warned the people, “You are not able to serve the LORD, for he is a holy and jealous God. He will not forgive your rebellion and your sins.