Why is the concept of a royal priesthood important for Christians?

The significance of the royal priesthood is highlighted in 1 Peter 2:9, which states that every believer is part of this holy priesthood. Unlike the Old Covenant where only the Levites served as priests, in the New Covenant, all believers have been conferred with a priestly role. This means they can come directly to God in prayer and worship without needing a human mediator. It emphasizes that every Christian is called to minister to others and to offer spiritual sacrifices, as worship and service arise from a heart that has been transformed by grace.