According to the Hebrews letter, Jesus couldn’t have ever become a priest because He was from the line of Judah. In order to be a priest during the Old Covenant period one had to come from the line of Levi. Once the author of Hebrews establishes this, he goes on to tell us why. Because the priesthood of Levi, which was also known as the Law, could never perfect the worshiper, God revealed a New Covenant. Whenever the priesthood changes there arises the necessity of a new law also. You see whereas the Old Covenant of the Law, and the priesthood coming from Levi, was a Covenant which was destined to end because it had only earthly men as priest. In the New Covenant a new priest arises, who is after the order of Melchizedek, which isn’t based on the physical requirement of coming from Levi rather it is based on the power of an indestructible life. So, like the mysterious Melchizedek, Jesus is priest forever because He will never die, and so will never need another to take His place.
Well, okay so Jesus is now priest forever so what about the New Covenant? Let’s compare the Old with the New for a minute. The Old Covenant was based on the worshipper’s commitment to God. God says, for instance, keep my commandments and the worshipper says, “Whatever you say we’ll do.” If the truth’s told no one could ever fulfill God’s commandments, it’s just that we tend to take a long time to discover this. The good news is God has always known this and at just the right time, He did something about it. He offers us a New way.
The first Covenant had troubles because we simply couldn’t live up to our end of the deal. So now God institutes something else. He says, “I will effect a New Covenant…not like the covenant before…no. This is the covenant that I will make with you now. I will put my laws into your minds, and I will write them on your hearts. I will be your God, and you shall be my people.” You see this New Covenant is entirely one sided. The old one required us to perform up to a perfect standard of righteousness. In the new one God is going to do it all. That’s right, you heard me!
The Old Covenant’s priesthood, sacrificial system, Temple and altar and everything has been superseded. Christ is greater than the Old Covenant priest, sacrifices, temple and everything. “For by one offering He has perfected for all time those who are sanctified.” There is nothing left for us to do. God has done everything He is ever going to do for us in His Son Jesus Christ! I know that’s a profound statement but I encourage you to search this out for yourselves. Read Hebrews chapters 8-10 and see if I’m steering you wrong. These chapters even go as far as to say, while the blood of bulls and goats could cleanse the worshipper’s flesh, the sacrifice of Christ himself can even cleanse our consciousness of sins. What, even the consciousness of sins? This truly is good news isn’t it?