Hebrews 2:14, 17

Since all his “children” have flesh and blood, so Jesus became human to fully identify with us. He did this, so that he could experience death and annihilate the effects of the intimidating accuser who holds against us the power of death.

This is why he had to be a man and take hold of our humanity in every way. He made us his brothers and sisters and became our merciful and faithful King-Priest before God; as the One who removed our sins to make us one with him.