What does the Bible say about Christ being our King Priest?

Psalm 110 describes Christ as both King and Priest, highlighting His unique position as the fulfillment of Old Testament prophecy. Verse 1 portrays Him sitting at God's right hand, symbolizing His authority and victory over His enemies. As our High Priest, Christ has accomplished perfect atonement for sins, as articulated in the book of Hebrews, where it contrasts Him with the Levitical priests who could never sit down because their work was never finished. By sitting down, Jesus demonstrates that He has completed His redemptive work, effectively securing eternal salvation for His people.