“For on the one hand, a former commandment is set aside because of its weakness and uselessness (for the law made nothing perfect); but on the other hand, a better hope is introduced, through which we draw near to God.” (Hebrews 7:18–19 ESV)
Jesus is not a priest of the Levitical line of Aaron, He is of a higher, eternal, preeminent priestly order: Melchizedek. He establishes the eternality of His priesthood by overcoming the grave (v16). The former covenant of the Mosaic Law has been set aside “because of its weakness and uselessness (for the law made nothing perfect)” (7:18–19). It is weak in that it is only able to diagnosis the problem of sin, but contains no power to heal the problem of sin. But “a better hope is introduced, through which we draw near to God.” (7:19). Through the sacrifice of Christ we can now draw near in authentic relationship to God, no other priest is required to intercede on our behalf, we have direct access to the Creator. Jesus is the guarantor of this better hope, of this new covenant that God makes with those who believe (7:22); Our high priest is “holy, innocent, unstained, separated from sinners, and exalted above the heavens,” (7:26) and has no needs in and of himself. He does not need to make offerings for His sins first, He is sinless – He did this once, for all. Jesus, the perfect priest, is now reigning and interceding. Draw near to God with confidence that His sacrifice has covered all of your sins, come and be renewed.