Moses cried out to God, "I beseech thee, show me thy glory" (Exodus 33:18). Men, the enemy of our souls will do all that he can to stop us from truly seeing God.
Many will say they see God in all of nature surrounding us and that is enough. There is a biblical basis for beholding God in creation. Romans 1: 20 says: "For the invisible things of him from the creation of the world are clearly seen, being understood by the things that are made, even his eternal power and God head, so that they are without excuse." However, it is possible to see God in creation and yet not really see Him.
Moses obviously saw Him in creation as well as experiencing His holy presence at the burning bush (Exodus 3:2-6).
Moses met with God on the top of Mt. Sinai when God gave him the Ten Commandments. He dwelt in the immediate presence of God for forty days and forty nights (Exodus 30).
Along with Aaron, Nadab, and Abihu, plus the seventy elders of Israel, Moses saw God (Exodus 24:9-11).
Moses spake with God "face to face, as a man speaketh unto his friend" (Exodus 33:11).
Anyone else would have been satisfied, but not Moses. In Exodus 34:13 he earnestly prays: "I pray thee, if I have found grace in thy sight, show me now thy way, that I may know thee, that I may find grace in thy sight."
In verse 18 he prays: "I beseech thee, show me thy glory."
Do we who have the privilege of seeing God through looking at His Son, Jesus Christ, have this same unquenchable desire to see more of God. Do we really want to know Him? Do we long to see His glory?
Is it impurity that robs us of this greater vision of God? Or is it plain apathy? In a sense, apathy is an impurity.