Cross reference
Hebrews 5:10
10 named by God a high priest after the order of Melchizedek.
Hebrews 5:5-6
5 So also Christ didn't glorify himself to be made a high priest, but it was he who said to him, "You are my Son. Today I have become your father."
6 As he says also in another place, "You are a priest forever, After the order of Melchizedek."
Hebrews 6:20
20 where as a forerunner Jesus entered for us, having become a high priest forever after the order of Melchizedek.