Here we have a Psalm "To the chief musician upon Mahaleth: a psalm of instruction of David, when Doeg the Edomite went in, and told Saul and said to him, David went to the house of Ahimelech." As we had the saints brought to renounce ceremonies as a substitute for righteousness and repentance, now we have the treacherous enemy portrayed, and the saints in their helpless exposure suffering, but delivered by the destruction that falls on the Edomite at the end, when good shall flourish like the olive and give thanks for ever.