Joshua 5:2-5

The Voice

² At that time, the Eternal One commanded Joshua to make flint knives and reinstate the rite of circumcision for male Israelites. ³ So Joshua made flint knives as he was told to do, and the Israelite males were circumcised at Gibeath-haaraloth.^{[a] 4-5} This is because all of the male Israelites who had fled from Egypt and all their soldiers who had fought so bravely had been circumcised, but they had died on the long journey. And those who had been born during the journey had not yet been circumcised.