Be very careful, therefore, to love the LORD your God.
You must guard yourselves against the snares laid for you; the Canaanites will draw you toward their idols if you let down your watch. Nothing will hold you fast to the Lord and His worship like genuine love for Him, and nothing will shield you from apostasy like it.
AI summary
God pledges what He has already given as proof of what remains to be fulfilled. But His promise depends entirely on their keeping themselves clear of the Canaanites and their idolatry. Steadfast adherence to God's law will bring brilliant victories; any other path breaks the condition.
AI summary
Commenting on Joshua 23:5-11
Take good heed, therefore, that ye love the Lord your God--The sum of his exhortation is comprised in the love of God, which is the end or fulfilment of the law (Deu 6:5; Deu 6:11:13; Mat 22:37).