Is There a Difference Between Being Sinful and Become Sin?

Can a person with a human nature die, even if they are free from sin? Can a person die? Well, according to genesis, chapter in genesis, it says, in that day you will surely die. So was jesus free from sin, and he also died. Jesus became sin. That's why he died. And we can axly discern from other passages in scripture that jesus brothers are his biological younger half siblings. Where in the bible is the greek word adelphos used to describe a siblings having the same mother but different fathers? I think we actually have more things we agree on than less. Let's talk about the perpetual virginity of mary