OT and New Testament Sabbath (5)

How difficult it was to keep the regulations for Sabbath that were required in the Old Testament! Then in the New Testament how did Jesus Christ complete the law? Just like in the Old Testament, the priests were the only ones allowed to work and their work was done in the sanctuary. Who, then are the priests in the New Testament? In 1 Peter 2:9, But you are a chosen people, a royal priesthood, a holy nation, a people belonging to God, that you may declare the praises of Him who called you out of darkness into his wonderful light. You are a chosen people, a royal priesthood, a holy nation. God said we are chosen! God said we are a royal priesthood! God said we are a holy nation! How are we made holy? By keeping the Sabbath day, Saturday, the 7th day of the week! If we continue in verse 10, Once you were not a people, but now you are the people of God, once you had not received mercy, but now you have received mercy. God allowed us so much mercy in keeping the Sabbath day as Jesus Christ taught us in the New Testament. God said we are a royal priesthood. Just like the priests who worked in the sancturay in the Old Testament, we as the royal priesthood also have to work. How do we work?