Everyone dies. Scripture teaches that Jesus learnt obedience through suffering. That means that the paradigms and belief structures he embraced were tested in real live pain and suffering. If it wasn’t it would not have any meaning to us. If he did not die then how could I, who will die, trust that his example can be trusted?
Through it all, he stayed true to his faith/convictions, even to the point of accepting an unfair death on a cross. He was rewarded for his faithfulness with resurrection life. That is why the apostle Paul proclaimed that if Jesus were not raised from the dead then our faith is in vain. It would have meant that the willingness to lay down my physical body rather than abandon my divine nature is nothing but delusional suicide. If this life is all there is then willingly relinquishing it is utter stupidity.