'Back' in the Bible

He shall bring them to the priest, and he shall present that which [is] for the sin offering first, and [the priest] shall wring its head off {at the back of its neck}, but he must not sever [it],

{and when} he sins and is guilty, then he shall bring back {the things he had stolen} or {what he had extorted} or {something with which he had been entrusted} or the lost property that he had found,

And the priest shall examine [it] after the infection has been washed off, and {if} the infection has not changed its outward appearance and the infection has not spread, it [is] unclean; he must burn it in the fire; it [is] a fungus on its back or on its front.