Calvin on Sorrow in David

From this it appears that David contended strongly against his sorrow, lest he should yield to temptation: but what we ought chiefly to observe is, that he had experienced a strong and bitter contest before he obtained the victory over it; or we might rather say, that he was not delivered from it after one alarming assault, but was often called upon to enter into new scenes of conflict. It need not excite our wonder that he was so much disquieted and cast down, since he could not discern any sign of the divine favor towards him. But David here represents himself as if he formed two opposing parties. In so far as in the exercise of faith he relied upon the promises of God, being armed with the Spirit of invincible fortitude, he set himself, in opposition to the affections of his flesh, to restrain and subdue them; and, at the same time, he rebuked his own cowardice and imbecility of heart. Moreover, although he carried on war against the devil and the world, yet he does not enter into open and direct conflict with them, but rather regards himself as the enemy against whom he desires chiefly to contend. -Calvin on Psalm 42