Deuteronomy 4:24 (ESV)

24 For the LORD your God is a consuming fire, a jealous God.

This closing remark in this section takes up again the image of fire from Deuteronomy 4:15, applies it to God himself, and links it with his jealousy. This God is intolerant of idolatry. Therefore, to him alone may the covenant people show love and allegiance.