My heart panteth
 Or "goes about" F13; runs here and there, and finds no rest; as Aben Ezra interprets the word from the Targum he cites; though the Targum we have renders it, "my heart shakes with fear", or dread, as persons in a fever. Jarchi interprets the word, surrounded with grief; it denotes the panting or palpitation of the heart, through sorrow and dread, and the failing of it, even as at death; 
 my strength faileth me,
 or "forsakes me" F14; bodily strength and spiritual strength; the strength of faith, hope, and confidence; 
 as for the light of mine eyes, it also is gone from me;
 which is often the case of persons under bodily disorders, their eyes grow dim, and sight fails them; and this might be true in a spiritual sense of the psalmist, who had lost sight of God as his covenant God; of his interest in his love, in the blessings of his grace, and in eternal salvation, and was walking in darkness, and saw no light.