C. H. Spurgeon comments on Psalm 7, from The Treasury of David:
From the title we learn the occasion of the composition of this song. It appears probable that Cush the Benjamite had accused David to Saul of treasonable conspiracy against his royal authority. This the king would be ready enough to credit, both from his jealousy of David, and from the relation which most probably existed between himself, the son of Kish, and this Cush, or Kish, the Benjamite. He who is near the throne can do more injury to a subject than an ordinary slanderer.
This may be called the SONG OF THE SLANDERED SAINT. Even this sorest of evils may furnish occasion for a Psalm. What a blessing it would be if we could turn even the most disastrous event into a theme for song, and so turn the tables upon our great enemy. Let us learn a lesson from Luther, who once said, “David made Psalms; we also will make Psalms, and sing them as well as we can to the honour of our Lord, and to spite and mock the devil.”