How do we know that Jesus is our faithful high priest?

Hebrews 2:17 states that Jesus was made like His brethren to become a merciful and faithful high priest. This role was necessary for Him to make atonement for the sins of His people. Understanding His high priestly work illustrates the Christian faith's reliance on Christ as our mediator, who intercedes for us and purifies us from sin. His rejection of the multitude striving to make Him king was essential for Him to accomplish His high priestly duties, as He had to suffer alone for our transgressions before being exalted as king. Through His faithfulness, we find reassurance in our position as His redeemed, complete in Him, due to the covenant enacted between Him and the Father.