Commentaries
1:1-3 To meditate in God's word, is to discourse with ourselves concerning the great things contained in it, with close application of mind and fixedness of thought. We must have constant regard to the word of God, as the rule of our actions, and the spring of our comforts; and have it in our thoughts night and day. For this purpose no time is amiss.
3. like a tree—(Jer 17:7, 8).
planted—settled, fast.
by—or, "over."
the rivers—canals for irrigation.
shall prosper—literally, "make prosper," brings to perfection. The basis of this condition and character is given (Ps 32:1).