Jesus is affirmed as our eternal priest because He is a high priest in the order of Melchizedek, which signifies His eternal and unchanging nature.
The assurance that Jesus is our eternal priest comes from His unique designation as a priest after the order of Melchizedek, a priest who, according to Scripture, has no beginning and no end. This is evidenced in Hebrews 7:12-13, where it is noted that when the priesthood changes, so must the law. Jesus, being from the tribe of Judah and not the Levitical line, speaks to a new covenant established through His sacrificial death—one that guarantees His priesthood is eternal. He stands as our advocate before God, as Hebrews 7:25 declares that He is able to save to the uttermost those who come to God through Him.
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