For the children of Israel walked forty years in the wilderness, until all the nation, even the men of war who came forth out of Egypt, were consumed, because they didn't listen to the voice of Yahweh: to whom Yahweh swore that he wouldn't let them see the land which Yahweh swore to their fathers that he would give us, a land flowing with milk and honey.
The revival of the two great ordinances - circumcision and the Passover - after so long an intermission could not but awaken the zeal and invigorate the faith and fortitude of the people. Both as seals and as means of grace and God’s good purpose toward them then, the general circumcision of the people, followed up by the solemn celebration of the Passover - the one formally restoring the covenant and reconciling them nationally to God, the other ratifying and confirming all that circumcision intended - were at this juncture most opportune.