This is a strong sarcasm. You are like Adam, when in his innocence and excellence he was in the garden of Eden! Adam, the first and best man.
The sarcasm continues; and here he is likened to the Cherub that guarded the gates of Paradise, and kept the way of the tree of life. Arrogantly assuming his power is much greater than it really was.
The sarcasm is kept up. Thou hast been like the angels, like Moses, like the cherubs, like Adam, like God, till thy iniquity was found out. His pride and arrogance was so great he was better than any and all men. Until his folly was exposed to all.
It is a description of all men when their pride overwhelms them.