Yehoshua 5:3-5

Orthodox Jewish Bible

³ And Yehoshua made him flint knives, and did Bris Milah to the Bnei Yisroel at Givat HaAralot.

⁴ And this is the reason why Yehoshua did the Bris Milah: Kol HaAm that came out of Mitzrayim, that were zekharim (males), even Kol Anshei HaMilchamah, died in the midbar baderech, after they came out of Mitzrayim.

⁵ Now Kol HaAm that came out were Mulim (circumcised); but Kol HaAm that were born in the midbar baderech when they came forth out of Mitzrayim, them they had not given Bris Milah.