Priests had to be humans and taken from among men
So that they can feel and have compassion, God is not human, he wanted someone to represent them who is fully human – they were to have compassion on the humans
Jesus on earth was in training for job in heaven – He knows temptation, rejection, pain, betrayal, shortage….to represent God Jesus didn’t not need to be human
Jesus doesn’t only know how it feels, but He can help, be of good cheer, I have overcome the world