Ezek 34:18

“Now he speaks to the sheep, that is, the people, and to the flock of either kind, that is, of sheep and she-goats but also to rams and he-goats who are leaders among flocks. To them he says, "Is it not enough for you to be fed for the good nourishment the Scriptures provide? But you crush under your feet what remains of your food, and when you have drunk the purest water that are the words of God, you disturb with your feet the waters that remain, so that my people chew food that is trodden on by you and drink water that has been disturbed by you."”

“For indeed the shepherds drink most pure water, when with a right understanding they imbibe the streams of truth. But to foul the same water with their feet is to corrupt the studies of holy meditation by evil living. And verily the sheep drink the water fouled by their feet, when any of those subject to them follow not the words which they hear, but only imitate the bad examples which they see. Thirsting for the things said, but perverted by the works observed, they take in mud with their draughts, as from polluted fountains.”