Moses and “his minister Joshua”(Exodus 24:13) were now summoned to meet with God. And as they were to be some time absent, the leader appointed Aaron and Hur, assisted by the elders, to act in his stead. “And Moses went up into the mount, and a cloud covered the mount. And the glory of the Lord abode upon Mount Sinai.” Exodus 24:15, 16. For six days the cloud covered the mountain as a token of God’s special presence; yet there was no revelation of Himself or communication of His will. During this time Moses remained in waiting for a summons to the presence chamber of the Most High. He had been directed, “Come up to Me into the mount, and be there,”(Exodus 24:12) and though his patience and obedience were tested, he did not grow weary of watching, or forsake his post. This period of waiting was to him a time of preparation, of close self-examination. Even this favored servant of God could not at once approach into His presence and endure the exhibitions of His glory. Six days must be employed in devoting himself to God by searching of heart, meditation, and prayer before he could be prepared for direct communication with his Maker. (PP 313.1) MC VC

Upon the seventh day, which was the Sabbath, Moses was called up into the cloud. The thick cloud opened in the sight of all Israel, and the glory of the Lord broke forth like devouring fire. “And Moses went into the midst of the cloud, and gat him up into the mount; and Moses was in the mount forty days and forty nights.” Exodus 24:18. The forty days’ tarry in the mount did not include the six days of preparation. During the six days Joshua was with Moses, and together they ate of the manna and drank of “the brook that descended out of the mount.” But Joshua did not enter with Moses into the cloud. He remained without, and continued to eat and drink daily while awaiting the return of Moses, but Moses fasted during the entire forty days. (PP 313.2) MC VC

During his stay in the mount, Moses received directions for the building of a sanctuary in which the divine presence would be specially manifested. “Let them make Me a sanctuary; that I may dwell among them” (Exodus 25:8), was the command of God. For the third time the observance of the Sabbath was enjoined. “It is a sign between Me and the children of Israel forever,” the Lord declared, “that ye may know that I am Jehovah that doth sanctify you. Ye shall keep the Sabbath therefore; for it is holy unto you.... Whosoever doeth any work therein, that soul shall be cut off from among his people.” Exodus 31:17, 13, 14. Directions had just been given for the immediate erection of the tabernacle for the service of God; and now the people might conclude, because the object had in view was the glory of God, and also because of their great need of a place of worship, that they would be justified in working at the building upon the Sabbath. To guard them from this error, the warning was given. Even the sacredness and urgency of that special work for God must not lead them to infringe upon His holy rest day. (PP 313.3) MC VC