5:1-9 How dreadful is their case, who see the wrath of God advancing towards them, without being able to turn it aside, or escape it! Such will be the horrible situation of the wicked; nor can words express the anguish of their feelings, or the greatness of their terror. Oh that they would now take warning, and before it be too late, flee for refuge to lay hold upon that hope set before them in the gospel! God impressed these fears on the Canaanites, and dispirited them. This gave a short rest to the Israelites, and circumcision rolled away the reproach of Egypt. They were hereby owned to be the free-born children of God, having the seal of the covenant. When God glorifies himself in perfecting the salvation of his people, he not only silences all enemies, but rolls back their reproaches upon themselves.
4-7. this is the cause why Joshua did circumcise—The omission to circumcise the children born in the wilderness might have been owing to the incessant movements of the people; but it is most generally thought that the true cause was a temporary suspension of the covenant with the unbelieving race who, being rejected of the Lord, were doomed to perish in the wilderness, and whose children had to bear the iniquity of their fathers (Nu 14:33), though, as the latter were to be brought into the promised land, the covenant would be renewed with them.