Hebrews 5:4-10

4No one takes this honor upon himself; he must be called by God, just as Aaron was. 5So also Christ did not take upon Himself the glory of becoming a high priest, but He was called by the One who said to Him:

6And in another passage God says:

7During the days of Jesus’ earthly life, He offered up prayers and petitions with loud cries and tears to the One who could save Him from death, and He was heard because of His reverence. 8Although He was a Son, He learned obedience from what He suffered. 9And having been made perfect, He became the source of eternal salvation to all who obey Him 10and was designated by God as high priest in the order of Melchizedek.