John Wesley on Exodus 33:22

I will put thee in a cleft of the rock - In that he was to be sheltered from the dazzling light, and devouring fire of God's glory. This was the rock in Horeb, out of which water was brought, of which it is said, That rock was Christ, 1Cor 10:4. 'Tis in the clefts of this rock that we are secured from the wrath of God, which otherwise would consume us: God himself will protect those that are thus hid: and it is only through Christ that we have the knowledge of the glory of God. None can see that to their comfort, but those that stand upon this rock, and take shelter in it.