'Lean' in the Bible

‘Thus says the Lord,“Those who uphold and support Egypt will fallAnd the pride of her power will come down;From Migdol [in the north] to Syene [in the south]They will fall within her by the sword,”Says the Lord God.

Therefore thus says the Lord God to them, “Behold, I Myself will judge between the [well-fed] fat sheep and the lean sheep.