Hebrews 2:17 Therefore Jesus had to be like his brothers and sisters in every respect, so that he might be a merciful and faithful high priest.

Jesus could have been many, many things WITHOUT becoming one of us—but he could not have become a merciful and faithful high priest. As we imagine him before the throne of God, interceding on our behalf, we give thanks that he knows us and he knows what our lives are like. He can be merciful because he knows.