OT in NT 15: Psalm 110 Rule

Psalm 110:1-4 reveals a profound truth about Jesus: "Sit at my right hand, until I make your enemies your footstool... You are a priest forever after the order of Melchizedek." This passage plainly means that the Messiah, identified as David's Lord, is enthroned at God's right hand in a position of supreme authority and also holds an eternal priesthood.
This psalm provides the foundational language found in the New Testament for understanding Jesus' current reign and priestly role. Jesus himself, as recorded in Matthew 22:41-46, used this psalm to demonstrate that the Messiah is not merely a descendant of David, but is indeed David's divine Lord, asking, "If then David calls him Lord, how is he his son?" The book of Hebrews further expounds on this, applying the right-hand enthronement of Psalm 110 to the Son in Hebrews 1:13, showing His superiority over angels. Hebrews 7:17 directly applies the promise, "You are a priest forever, after the order of Melchizedek," to illustrate Jesus' unique and eternal priestly mediation.
This understanding matters deeply for your faith because it clarifies that Jesus is not passively waiting to assume His kingly role in the future. The risen Messiah is currently reigning at God’s right hand, actively exercising His universal authority. Simultaneously, He mediates as your eternal High Priest, interceding on your behalf, providing ongoing access to God, and fulfilling all the promises of Psalm 110. Knowing this offers profound assurance of His active, present involvement in your life and the world.