Psalm 110 holds a pivotal role in the New Testament, serving as a cornerstone for understanding Christ's messianic kingship and eternal priesthood. This Psalm, particularly verses 1 and 4, is extensively referenced throughout the New Testament, illustrating the fulfillment of Old Testament prophecy through Christ. Verse 1, which speaks of the Lord inviting David's Lord to sit at His right hand, underscores Christ's divine authority and prefigures His ascension and enthronement in heaven. Meanwhile, verse 4, which declares a priesthood in the order of Melchizedek, highlights the uniqueness of Christ's priesthood, transcending the Levitical priesthood and emphasizing His role as a mediator of a better covenant. These themes are not only foundational to the theology of Hebrews but are also echoed in Acts, where they reinforce the proclamation of the Gospel, affirming Jesus' identity and mission, and calling all to recognize Him as both Lord and Christ, the fulfillment of God's promises to David.