Psalms 140:1

1. Deliver me… preserve me The first verb is in the imperative, the second in the indicative future, thus: Deliver me… thou wilt preserve me. The first is a prayer, the second an expression of confidence in the answer of prayer. “The insensible transition from direct prayer to confident anticipation is characteristic of the psalms of David.” Alexander.

Evil man… violent man The former is a worthless man, without conscience or principle; the latter is one whose internal badness has developed into overt acts of outrage. The danger from the former is false faith, betrayal; from the latter, destruction. From the former he would be delivered, literally, drawn away; from the latter, preserved, literally, defended, by the direct exercise of power. The parallelism is very regular and forcible. The evil man here deprecated was not an ideal person, but one who had already signalized himself for falsehood, treachery, and deeds of blood. This was not Saul, of whom David never spoke with disrespect, but Doeg, the fit type of Judas Iscariot. See introductory note, and Psalms 109:8