What is the Priesthood of Every Believer? explains this neecssary and essential Bible doctrine and how it works.
The short definition is that God has ordered every single believer (saved person) in this dispensation of the New Testament to be a priest before God, offering sacrifices and serving God and the body of Christ.
1 Peter 2:9 But ye are a chosen generation, a royal priesthood, an holy nation, a peculiar people; that ye should shew forth the praises of him who hath called you out of darkness into his marvellous light: Revelation 1:6 (God) hath made us… priests unto God
If words mean something, then God declaring us to be a royal priesthood should mean something. We are not under the Old Testament rule and structure of things. In other words, we (all male believers) do not go to the temple in Jerusalem to offer a sacrifical lamb. The temple is closed as far as offering animal sacrifices, and a non-Jew would not be allowed in to sacrifice anyway. Moreover, under the Old Testament law, no Israelite was allowed to offer sacrifice in the temple except with the help or mediation of a legitimate Jewish priest. Messianic Jews try to mix New and Old Testament such as forcing the New Testament believers to obey the Old Testament law, and that is just not possible today.
