"Who is this weeping angel?"

41 And it came to pass that the Lord spake unto Enoch, and told Enoch all the doings of the children of men; wherefore Enoch knew, and looked upon their wickedness, and their misery, and wept and stretched forth his arms, and his heart swelled wide as eternity; and his bowels yearned; and all eternity shook. (Pearl of Great Price | Moses 7:41)

Hugh Nibley comments on the weeping Enoch:

"In the Syriac Apocalypse of Paul, the apostle also is introduced to Enoch, being told when he is asked, "Who is this weeping angel?": "It is Enoch, the teacher of righteousness."

"So I entered into that place, " Paul reports, "and saw the great Elijah, who came to meet us." He too was weeping, saying, "Oh Paul, how great are the promises of God and his benefits and how few are worthy of them?"

"There is, to say the least, no gloating in heaven over the fate of the wicked world. It is Enoch who leads the weeping, as it is in the Joseph Smith account. Enoch puts forth his arm and weeps, and says, "I will refuse to be comforted." (Moses 7:44) Enoch is the great weeper in the Joseph Smith version. Of course, he doesn't want the destruction of the human race. But in the Joseph Smith version, the amazing thing is that when God himself weeps and Enoch says, "How is it that thou canst weep?" Enoch bears testimony that the God of heaven actually wept. It is a shocking thing to say, but here again, if we go to another Enoch text, there it is! When God wept over the destruction of the temple, we're told in one of the midrashim that is was Enoch who fell on his face and said," I will weep, but weep not thou!" God answered Enoch and said, "If thou wilt not suffer me to weep, I God will go wither thou canst not come and there I will Lament..."

Hugh Nibley, Enoch the Prophet p.5.