“[Moses] did everything right. Over and over again the Bible says that he set up the tabernacle just the way God told him to. Everything was in place. The only thing missing was the one thing that everyone was waiting to see: the glorious presence of God. This was not something that Moses could set in place. With the right instructions, he could put the tabernacle together, but only God could fill it with glory. The only way to approach the God of all glory is to come with a sacrifice of blood. By initially denying Moses entrance, God once again taught his people the necessity of atonement. We also learn that God is infinitely more glorious than we could ever expect or imagine. After a while we start to get used to God. We become familiar with the vocabulary used to describe his divine attributes. We have heard of his holiness, justice, mercy, and love. We are able to list these terms, and perhaps even to define them, but do we have any idea how glorious God is in the majesty of his triune being? Are we aware of the mortally dangerous perfection of his holiness? Do we sense how overwhelming it is to come into the presence of his glory? Moses knew God better than any man alive; yet when the glory came down, he was not able to enter. Neither can we penetrate God’s infinite glory; we can only stand back and worship with reverence and awe.”
(Philip Ryken, Preaching the Word Commentary)

“Let all our employment be to know God; the more one knows Him, the more one desires to know Him. And as knowledge is commonly the measure of love, the deeper and more extensive our knowledge shall be, the greater will be our love; and if our love of God were great, we should love Him equally in pains and pleasures.”
(Brother Lawrence, The Practice of the Presence of God)