A priest is someone who acts as God’s representative to his people, Israel. One priest was selected to be the high priest, a position that they would hold for life. The first high priest was Moses’ brother, Aaron.
When Jesus came, he effectively changed the function and role of the priests. It’s through him we that we no longer need a priest to serve as our liaison to God. We can now approach God directly.
Therefore, Jesus became our high priest (Hebrews 6:20); refer to Melchizedek.
Key verse about High Priest: And so, dear brothers and sisters who belong to God and are partners with those called to heaven, think carefully about this Jesus whom we declare to be God’s messenger and High Priest (Hebrews 3:1, NLT).
A lifelong student of the Bible, Peter DeHaan, PhD, wrote the 1,000-page website ABibleADay.com to encourage people to explore the Bible. His main blog and many books urge Christians to push past the status quo and reconsider how they practice their faith in every area of their lives.