How do we know that the priesthood of Melchizedek is significant?

The significance of Melchizedek's priesthood lies in the fact that it established a precept for the divine priesthood, which is later fulfilled in Jesus Christ. In Hebrews 7, it is emphasized that Melchizedek was without genealogy and lives forever, showcasing a priesthood that transcends time. By paying tithes to Melchizedek, Abraham acknowledged that the Levitical priesthood, ascending from his lineage, could not claim superiority over this higher order, thus reinforcing the eternal nature of Christ's priesthood as the ultimate fulfillment of this type.