Moses rose up - In Exodus 24:16 it is said that the glory of the Lord abode on the mount, and the cloud covered it. The glory was probably above the cloud, and it was to the cloud that Moses and his servant Joshua ascended at this time, leaving Aaron and the elders below. After they had been in this region, viz., where the cloud encompassed the mountain, for six days, God appears to have called Moses up higher: compare verses Exodus 24:16 and Exodus 24:18. Moses then ascended to the glory, leaving Joshua in the cloud, with whom he had, no doubt, frequent conferences during the forty days he continued with God on the mount.

And Moses rose up, and his minister Joshua,.... In order to go up higher on the mount. Joshua, and he only, was to go up higher with him, though not to the top of the mount, at least not into the cloud upon it, as Moses did. Joshua was his minister or servant, and waited upon him wherever he went, and was to be his successor; and therefore for his encouragement, and to qualify him the better for it, he was indulged with a sight and knowledge of things others were not; for by his not knowing anything of the idolatry of the golden calf, Exodus 32:17 it appears that he was on some part of the mount all the forty days and forty nights; and if it should be asked whether he fasted all that time, or, if he did not, how he was provided with food and drink? it may be replied, that there is no necessity to suppose that he fasted all that time; and it is easy to imagine how he was supplied, for the manna fell round about the mountain, of which he might gather and eat day by day, as Aben Ezra observes; and there was a brook which descended out of the mount, from whence he might have water, Deuteronomy 9:21.
and Moses went up into the mount of God; Mount Sinai, where he had formerly appeared to him in a bush, and now had descended on it to give the law, and was still upon it, where his glory was seen; and therefore might, with great propriety, be called the mount of God; to the top of which Moses was preparing to go, but before he went gave the following instructions.

Moses went up into the mount of God--He was called to receive the divine transcript. Joshua was taken a little higher, and it would be a great comfort for the leader to have his company during the six days he was in patient waiting for the call on the seventh or sabbath day.

Joshua was his minister or servant, and it would be a satisfaction to him to have him with him as a companion during the six days that he tarried in the mount before God called to him. Joshua was to be his successor, and therefore thus he was honoured before the people, and thus he was prepared by being trained up in communion with God. Joshua was a type of Christ, and (as the learned Bishop Peirson well observes Moses takes him with him into the mount, because without Jesus, in whom are hid all the treasures of wisdom and knowledge, there is no looking into the secrets of heaven, nor approaching the presence of God.