My heart is smitten - Broken; crushed with grief. We now speak of "a broken heart." Even death is often caused by such excessive sorrow as to crush and break the heart.

And withered like grass - It is dried up as grass is by drought, or as when it is cut down. It loses its support; and having no strength of its own, it dies.

So that I forget to eat my bread - I am so absorbed in my trials; they so entirely engross my attention, that I think of nothing else, not even of those things which are necessary to the support of life. Grief has the effect of taking away the appetite, but this does not seem to be the idea here. It is that of such a complete absorption in trouble that everything else is forgotten.

My heart is smitten, and withered like grass - The metaphor here is taken from grass cut down in the meadow. It is first smitten with the scythe, and then withered by the sun. Thus the Jews were smitten with the judgments of God; and they are now withered under the fire of the Chaldeans.

My heart is smitten, and withered like grass,.... Like grass in the summer solstice (d), which being smitten with the heat of the sun, or by some blast of thunder and lightning, is dried up, and withers away; so his heart was smitten with a sense of sin, and of God's wrath and displeasure at him, and with the heat of affliction and trouble, that it failed him, and he could not look up with joy and comfort:

so that I forget to eat my bread; sometimes, through grief and trouble, persons refuse to eat bread, as Jonathan and Ahab, which is a voluntary act, and purposely done; but here, in the psalmist, there was such a loss of appetite, through sorrow, that he forgot his stated meals, having no manner of inclination to food: some understand this of spiritual food, the bread of life, refusing to be comforted with it; so the Targum,

"for I forgot the law of my doctrine.''

(d) "Quasi solstitialis herba paulisper fui", Plauti Pseudolus, Acts 1. Sc. 1. v. 36.

My heart is smitten, and withered like grass; so that I forget {d} to eat my bread.

(d) My sorrows were so great that I did not eat.

4. (Compare Ps 121:6).

so that I forget-or, "have forgotten," that is, in my distress (Ps 107:18), and hence strength fails.

102:1-11 The whole word of God is of use to direct us in prayer; but here, is often elsewhere, the Holy Ghost has put words into our mouths. Here is a prayer put into the hands of the afflicted; let them present it to God. Even good men may be almost overwhelmed with afflictions. It is our duty and interest to pray; and it is comfort to an afflicted spirit to unburden itself, by a humble representation of its griefs. We must say, Blessed be the name of the Lord, who both gives and takes away. The psalmist looked upon himself as a dying man; My days are like a shadow.