Why didn't the Archangel Michael save Jesus when he was crucified? I have read several articles about Michael the archangel, who is meant for the protection of people and souls.

Out of curiosity, I wondered: since Jesus is Son of God and also a prophet, why didn't God's Archangel Michael save Jesus when he was crucified?
Jesus' main purpose in coming to earth was to die on the cross in order to redeem mankind from their sins.

He attests to this in a number of places in the Bible, and other writers of scripture also say this.

Therefore to have Michael or any other archangel rescue Jesus would be to go against the wishes of God the Father - which Jesus, in his obedience, did not want. 

When Jesus disciples try to defend him he tells them not to, and explicitly addresses this question (Matthew 26:52-54):


  “Put your sword back in its place,” Jesus said to him, “for all who draw the sword will die by the sword. Do you think I cannot call on my Father, and he will at once put at my disposal more than twelve legions of angels? But how then would the Scriptures be fulfilled that say it must happen in this way?”


He predicts the manner of his death here.

You can see the theological necessity of it in Romans 5: 6-11


  You see, at just the right time, when we were still powerless, Christ died for the ungodly. Very rarely will anyone die for a righteous person, though for a good person someone might possibly dare to die. But God demonstrates his own love for us in this: While we were still sinners, Christ died for us.