Hebrews 5:6 – 10
New International Version (NIV)
6 And he says in another place,
.........“You are a priest forever,
..................in the order of Melchizedek.”
7 During the days of Jesus' life on earth, he offered up prayers and petitions with fervent cries and tears to the one who could save him from death, and he was heard because of his reverent submission. 8 Son though he was, he learned obedience from what he suffered 9 and, once made perfect, he became the source of eternal salvation for all who obey him 10 and was designated by God to be high priest in the order of Melchizedek.
From BibleGateway.com: http://www.biblegateway.com/passage/?search=Hebrews 5:6-10&version=NIV