Hebrews 7:1-19 speaks about the greatness of the priest Melchizedek and how Jesus is a priest in the order of Melchizedek. The passage explains that Melchizedek was both a king and a priest, and he blessed Abraham, who then gave him a tenth of everything he had. The author of Hebrews points out that this demonstrates Melchizedek's superiority over Abraham.
The passage goes on to explain that Jesus is also a high priest in the order of Melchizedek, and his priesthood is greater than the Levitical priesthood because it is eternal. It further discusses how Jesus' priesthood has replaced the old system because it brings perfection and allows people to come to God through him.
Overall, Hebrews 7:1-19 emphasizes the superiority of Jesus as a high priest in comparison to other priests, particularly highlighting his connection to Melchizedek and his eternal priesthood.