Every high priest is chosen from among men. He is appointed to act for them in everything that has to do with God. He offers gifts and sacrifices for their sins.
Even Christ did not take the glory of becoming a high priest for himself. God said to him, "You are my Son. Today I have become your Father." --(Psalm 2:7)
Jesus prayed while he lived on earth. He made his appeal with loud cries and tears. He prayed to the One who could save him from death. God heard him because he truly honored God.
By this time you should be teachers. But in fact, you need someone to teach you all over again. You need even the simple truths of God's word. You need milk, not solid food.