Exodus 24:13

“And Moses rose up, and his minister Joshua, etc.] 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, (<023217>Exodus 32:17,18) 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…”

“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. Exodus 24:16”

“his minister: Exo 17:9-14, Exo 32:17, Exo 33:11; Num 11:28 went up: Exo 24:2 Exodus 24:14”