To show that the LORD JESUS CHRIST makes our acts of worship acceptable to GOD because He added Himself as the ingredient of Perfect Sacrifice.
Are you a priest?
Yes. 1 Peter 2:9
1 Peter 2:9 (Amplified Bible)
But you are a chosen race, a royal priesthood, a dedicated nation, [God’s] own purchased, special people, that you may set forth the wonderful deeds and display the virtues and perfections of Him Who called