Might die (581) (apogenomenos/apoginomai from apo = marker of dissociation, implying a rupture from a former association + ginomai = cause to be, become) means to be afar off, to be away from, to be removed from, to depart. It means to cease existing and implies a complete and abrupt change. Classic Greek writers use apoginomai to mean "cease to exist" which was their euphemism for death, just as we today speak of a "departed one." The Amplified version nicely brings out the meaning of this verb rendering it... "that we might die (cease to exist) to sin" Literally apogenomenos means "Having ceased to be what we were before" or "we having parted with (Sin). When the Bible talks about death, it never means cessation of existence, but rather, speaks of separation. And so when we die physically, our soul is separated from our body. When we are born again, in a spiritual sense we die, for we are at that moment identified with Christ in His death, and that death or "co-crucifixion" brings about a separation from the power of the old nature, Sin. Now we can choose to obey God rather than the our old master Sin. In short, Peter's use of apoginomai highlights the idea this critically important truth of separation. Thayer renders Peter's words... “that we might be utterly alienated from our sins.”