Jamieson, Fausset & Brown

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 (Deu 9:9), on a peak scarcely thirty paces in compass. Next: Exodus Chapter 25