I. The creatures cannot give God intelligent thanks; in their own way they do it, yet not intelligently. But man can give a voice to it. God preserves the beasts as well as the men, and man comes as the high-priest of creation a sinner, yet encouraged by the grace of life and gives thanks in creation's name to Him from whom all good things come.
II. Mark how from the first step, the preservation of man and beast, the Psalmist ascends. Whoever comes near to God in any way must come near to all that is in God; for he comes near to Himself. He comes near to the Preserver, but the Preserver has other characters as well. Thus the Psalmist is led from the consideration of the food which supports temporal life to that which supports spiritual, everlasting life. The loving-kindness of the Lord on that a soul can feed.
III. "They shall be abundantly satisfied." In order to satisfaction there are two things needful: that things be satisfying in their nature and that they be satisfying in their quantity. The assurance is here given as regards the house of God that the things are not only of a satisfying nature, but of a satisfying quantity. God is bountiful in the provisions of His providence and in the provisions of His grace.
J. Duncan, The Pulpit and Communion Table,p. 286.