Joshua 5:2

2So at that time, the Lord said to Joshua: “Make for yourself knives of stone, and circumcise the sons of Israel a second time.”
5:2 The second time: Not that such as had been circumcised before were to be circumcised again; but that they were now to renew, and take up again the practice of circumcision; which had been omitted during their forty years’ sojourning in the wilderness; by reason of their being always uncertain when they should be obliged to march.(Challoner)
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