Hebrews 2:9, 14-15

But we see Jesus, who as a man, lived for a short time lower than the angels and has now been crowned with glorious honor because of what he suffered in his death. For it was by God’s grace that he experienced death’s bitterness on behalf of everyone!

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. By embracing death Jesus sets free those who live their entire lives in bondage to the tormenting dread of death.