Commentaries
24:12-18 A cloud covered the mount six days; a token of God's special presence there. Moses was sure that he who called him up would protect him. Even those glorious attributes of God which are most terrible to the wicked, the saints with humble reverence rejoice in. And through faith in the atoning Sacrifice, we hope for greater honour than Moses ever enjoyed on earth. Now we see through a glass darkly, but when he shall appear, then face to face. This vision of God will continue with equal, if not increasing brightness of joy; not for a few days only, but through eternity.
18. Moses went into the midst of the cloud—the visible token of God's presence. Divine grace animated and supported him to enter with holy boldness.
Moses was in the mount forty days and forty nights—The six days spent in waiting are not included. During that protracted period he was miraculously supported (De 9:9), on a peak scarcely thirty paces in compass.