Joshua 5:2-4

Young's Literal Translation

² At that time said Jehovah unto Joshua, `Make for thee knives of flint, and turn back, circumcise the sons of Israel a second time;'

³ and Joshua maketh for him knives of flint, and circumciseth the sons of Israel at the height of the foreskins.

⁴ And this [is] the thing [for] which Joshua circumciseth [them]: all the people who are coming out of Egypt, who are males, all the men of war have died in the wilderness, in the way, in their coming out of Egypt,