This sermon examines the ordination of Aaron and his sons, highlighting their seven-day consecration and the command to “keep the charge of Yahweh.” It draws parallels between the priests’ preparation and the believer’s need for continual self-examination, repentance, and abiding in God’s presence. Emphasizing the holiness required to approach God, it warns against cheap grace and calls for true obedience grounded in Christ’s finished sacrifice. The message urges the church to embrace its role as a royal priesthood, faithfully proclaiming the gospel, living repentantly, and preparing reverently to partake of the Lord’s Supper as a covenant people set apart for God.