The Mishnah in Russia, Shana, and Runle Fanaha

All who enter the world will pass before him like sheep. God is going to cause everyone to pass beneath God and be recorded. On Rosh Hashanah, all the word passes, all the world passes before God like a flock of sheep. Over shows up so prominently in these words; what are the biblical references that are being drawn upon here? And in what way does that help complicate our understanding of God?"