2 but his delight is in the law[1] of the Lord, and on his law he meditates day and night.

Matthew Henry's Commentary on Psalm 1:2

Commentary on Psalm 1:1-3

(Read Psalm 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.