There’s a great moment in Moses’ story about God hiding him in a cleft in the rock and then letting him see the passing image of God because
“[Moses] cannot see [God’s] face, for no one may see [God’s] face and live.”
This is to say, no one can see the direct glory of God and live. Even the two great prophets, Issiah and Ezekiel have an indirect experience of the glory of God.
Ezekiel has this line in his vision of God:
Such was the vision of the likeness of the glory of the LORD.
Seeing God directly isn’t helpful in causing or building our belief, but seeing him indirectly is. Many unbelievers will say, ‘if God would just show himself, how could we not believe?’ They don’t realize that that’s not really what is keeping them from believing, while the inability to acknowledge God from the wonders of the universe is.
Our big problem is that we are content worshiping the effects of God, rather than God himself. We are content accepting his miracles here and now, rather than coming to know him more deeply and forgo those comforts of temporal life. We want his glory to be defined in this space, where we can categorize, analyze, and criticize it, rather than accept that it is beyond us. We forget that the basis of this existence is in him, and that even the greatest wonders we experience now are but a pale reflection of his glory.