Matthew Henry Commentary Psalms 1:1-3

"Blessed is the man that walketh not in the counsel of the wicked, Nor standeth in the way of sinners, Nor sitteth in the seat of scoffers: But his delight is in the law of Jehovah; And on his law doth he meditate day and night. And he shall be like a tree planted by the streams of water, That bringeth forth its fruit in its season, Whose leaf also doth not wither; And whatsoever he doeth shall prosper." — Psalms 1:1-3 (ASV)

To meditate on God's word is to converse with ourselves about the great things contained in it, with intense mental focus and unwavering concentration. We must have constant regard for the word of God as the rule for our actions and the source of our comforts; and keep it in our thoughts night and day. For this purpose, no time is unsuitable.