Everything that God gave Moses was good, it just wasn’t complete. Moses’ covenant isn’t bad, it is just imperfect. The Bible is a book of covenants on purpose. The Edenic, Adamic, Noahetic, Mosaic, and Davidic all served a purpose and all show different sides of God and his desire for us. But the New Covenant is the better, perfect covenant. It takes precedent over all the other ones. Jesus Himself stands behind the New Covenant. He is guarantor of it. Jesus himself is the guarantee of our salvation, of the earthly blessing, of the Holy Spirit’s dwelling in you. Every promise in the Bible is yours—he guarantees it.
As the new priest, Jesus shows us that he has an unchangeable priesthood. Jesus’ priesthood remains the same. “Jesus Christ is the same yesterday, today, and forever.” (Hebrews 13:8) He’s always good. He’ll always forgive. He’ll always heal. We need to get this into our thinking: He’s unchanging in his heavenly calling. He is not like a man that will die or change his mind or be subject to his emotions.
He saves to the uttermost: completely and forever. Our salvation is complete and unending because of Jesus. We won’t wake up tomorrow and he suddenly decides to withdraw my salvation. His heavenly function is to intercede for you and I. Someone is praying for you today: Jesus the High Priest. He’s calling out to the Father by name. The devil condemns you, but Jesus is standing in heaven defending you. He’s making intercession. He’s crying out for everything that he died to give us to be done in our lives. He’s crying out for our lives to be forever changed according to what he died to do. He’s declaring, praying and voicing those things to the Father.