Exodus 24:1

Come up unto the Lord Moses being already on the mount, the meaning is, “After thou hast gone down and acquainted the people with my will, and received their answer, then come up again.” He was to bring with him Aaron and his two eldest sons, Nadab and Abihu, who, by this special favour, were to be prepared for that office to which they were to be called. Seventy of the principal elders of Israel also were to accompany him, probably that they might be witnesses of Moses's immediate intercourse with God, and that they themselves might be possessed with a greater reverence for the laws to be received from him. Worship ye afar off Before they came near they must worship. Thus we must enter into God's gates with humble and solemn adorations.