In this passage, God speaks to Aaron, affirming the unique role and responsibility of the priesthood, which is bestowed upon Aaron and his sons. This role is not merely a duty but is described as a gift, indicating the honor and privilege associated with serving in God's presence. The priesthood involves serving at the altar and within the sacred space of the sanctuary, emphasizing the holiness and reverence required in these duties.
The warning that anyone else who approaches the sanctuary will be put to death underscores the seriousness with which God views the sanctity of worship and the roles He has established. This reflects a broader biblical principle of respecting divine order and the sacredness of God's presence. It serves as a reminder of the importance of approaching God with the right heart and respect for His commands.
For Christians today, while the specific roles of the Old Testament priesthood have been fulfilled in Christ, the principles of reverence, respect for God's holiness, and the importance of worship remain central to faith and practice.