"Therefore it is of faith that it might be according to grace, so that the promise might be sure to all the seed, not only to those who are of the law, but also to those who are of the faith of Abraham, who is the father of us all"
-Romans 4:16
If all were under the same dispensation why did Paul mention those who were of the law and also those who were of the faith of Abraham as though two distinct groups of people?
Jesus came to do away with the purification/ceremonial works.
Those are the things Jesus fulfilled.
The law that said to do various external washings---that was a teaching tool, a shadow of what was coming. It is about Jesus. Since Jesus, he washes us once and for all.
The law that said to observe special days---that was a teaching tool, a shadow of Jesus. All those special days are about Jesus. We observe Jesus all day every day. Observing special days is now worthless.
The law that said to sacrifice animals, to use their blood---that was a teaching tool about Jesus. Jesus is the Lamb of God and Jesus' blood takes away sins once and for all.
Jesus came; he circumcises our hearts with the Holy Spirit. Circumcision in the flesh is now just mutilation of the flesh.
Jesus fulfilled the law. The whole law was about him. Since we have salvation through Jesus, it is a greater salvation. Is it greater to observe the Son of God instead of special days? Is it better to be cleaned by the blood of God than by animals? Is it better to be circumcised in the heart by the Holy Spirit, than with a physical circumcision done by the hands of men
By believing and obeying Jesus, true Christians obey Moses, for we have a tent, a temple, our bodies are that temple, and we have the blood to atone for our sins, because Jesus is the Sacrificial Lamb.
The earthly temple had rules and regulations, but they were just an earthy replica of WHAT IS IN HEAVEN.
We do not go to a mere man as our high priest...Jesus is our High Priest.