John Wesley on Joshua 5:7

Circumcised - Which God would have done, As a testimony of God's reconciliation to the people, and that he would not farther impute their parents rebellion to them. Because the great impediment of circumcision was now removed, their continued travels, and frequent and uncertain removal. To prepare them for the approaching passover. To distinguish them from the Canaanites, into whose land they were now come. To ratify the covenant between God and them, whereof circumcision was a sign and seal, to assure them that God would now make good his covenant, in giving them this land; and to oblige them to perform all the duties to which that covenant bound them, as soon as they came into Canaan, Exo 12:25 Lev 23:10 Num 15:2.