Exodus 19:5-6
3-6. Moses went up unto God—the Shekinah—within the cloud (Ex 33:20; Joh 1:18).
Thus shalt thou say to the house of Jacob, &c.—The object for which Moses went up was to receive and convey to the people the message contained in these verses, and the purport of which was a general announcement of the terms on which God was to take the Israelites into a close and peculiar relation to Himself. In thus negotiating between God and His people, the highest post of duty which any mortal man was ever called to occupy, Moses was still but a servant. The only Mediator is Jesus Christ [1Ti 2:5; Heb 12:24].6. ye shall be unto me a kingdom of priests—As the priestly order was set apart from the common mass, so the Israelites, compared with other people, were to sustain the same near relation to God; a community of spiritual sovreigns.
an holy nation—set apart to preserve the knowledge and worship of God. Exodus 34:10-11
9, 10. he said, If now I have found grace in thy sight, O Lord, let my Lord, I pray thee, go among us—On this proclamation, he, in the overflowing benevolence of s heart, founded an earnest petition for the Divine Presence being continued with the people; and God was pleased to give His favorable answer to Moses' intercession by a renewal of His promise under the form of a covenant, repeating the leading points that formed the conditions of the former national compact.
8-26. Moses bowed . . . and worshipped—In the East, people bow the head to royalty, and are silent when it passes by, while in the West, they take off their hats and shout.