So there was no reason for him to remain dead. So he rose. Now the life he lives, he lives to God. His resurrection life is a life utterly oriented on and for the glory of God, with the problem of sin finished and done with. Therefore, he is triumphant over death.
Death is a defeated foe.
Christ is master of death, not the other way around. Jesus holds the keys of death and hell. Death serves his purposes and has no final authority over him. Therefore, Jesus will never die. He is indestructible, forever.