This verse lists the descendants of Aaron, the first high priest of Israel, tracing his lineage through Eleazar and Phinehas. It highlights the importance of the priestly line in the worship and service of God, emphasizing the continuity and significance of the priesthood in Israel's history. By documenting these genealogies, the verse underscores the meticulous record-keeping of the Israelites and the divine appointment of Aaron's descendants to carry out sacred duties in the tabernacle and temple.