Challenge The Obstacle!

 Circumcision in the scripture was done by the father to the son 8 days after birth. But a certain generation of Isrealites who were meant to circumcise their children had died in the wilderness, leaving the onus to Joshua. So, this generation of Isrealites that was born in the wilderness did not get what they ought to have gotten as infants, hence they had to get it as adults. Sometimes via IFTTT