Why art thou cast down?... - See Psalm 42:5, note; Psalm 42:11, note. The sameness of this verse with Psalm 42:5, Psalm 42:11 proves, as has been already remarked, that this psalm was composed by the same writer, and with reference to the same subject as the former. The doctrine which is taught is the same - that we should not be dejected or cast down in the troubles of life, but should hope in God, and look forward to better times, if not in this world, certainly in the world to come. If we are his children, we shall "yet praise him;" we shall acknowledge him as the "health" or the salvation (Hebrew) of our countenance; as one who by giving "salvation" diffuses joy over our countenance; as one who will manifest himself as our God. He who has an eternity of blessedness before him - he who is to dwell forever in a world of peace and joy - he who is soon to enter an abode where there will be no sin, no sadness, no tears, no death - he who is to commence a career of glory which is never to terminate and never to change - should not be cast down - should not be overwhelmed with sorrow.

Why art thou cast down - Though our deliverance be delayed, God has not forgotten to be gracious. The vision, the prophetic declaration relative to our captivity, was for an appointed time. Though it appear to tarry, we must wait for it. In the end it will come, and will not tarry; why then should we be discouraged? Let us still continue to trust in God, for we shall yet praise him for the fullest proofs of his approbation in a great outpouring of his benedictions.

Why art thou cast down, O my soul?.... See Gill on Psalm 42:5 and See Gill on Psalm 42:11.

Why art thou cast down, O my soul? and why art thou disquieted within me? {e} hope in God: for I shall yet praise him, who is the health of my countenance, and my God.

(e) By which he admonishes the faithful not to relent but constantly to wait on the Lord, though their troubles are long and great.

43:6-11 The way to forget our miseries, is to remember the God of our mercies. David saw troubles coming from God's wrath, and that discouraged him. But if one trouble follow hard after another, if all seem to combine for our ruin, let us remember they are all appointed and overruled by the Lord. David regards the Divine favour as the fountain of all the good he looked for. In the Saviour's name let us hope and pray. One word from him will calm every storm, and turn midnight darkness into the light of noon, the bitterest complaints into joyful praises. Our believing expectation of mercy must quicken our prayers for it. At length, is faith came off conqueror, by encouraging him to trust in the name of the Lord, and to stay himself upon his God. He adds, And my God; this thought enabled him to triumph over all his griefs and fears. Let us never think that the God of our life, and the Rock of our salvation, has forgotten us, if we have made his mercy, truth, and power, our refuge. Thus the psalmist strove against his despondency: at last his faith and hope obtained the victory. Let us learn to check all unbelieving doubts and fears. Apply the promise first to ourselves, and then plead it to God.