World Wide Study Bible
a Bible passage
He makes me lie down in green pastures;
he leads me beside still waters;
2. green pastures—or, "pastures of tender grass," are mentioned, not in respect to food, but as places of cool and refreshing rest.
the still waters—are, literally, "waters of "stillness," whose quiet flow invites to repose. They are contrasted with boisterous streams on the one hand, and stagnant, offensive pools on the other.