Judge me, O God,.... The Targum adds, with the judgment of truth; see Rom 2:2; and plead my cause; which was a righteous one; and therefore he could commit it to God to be tried and judged by him, and could put it into his hands to plead it for him; See Gill on Psa 35:1; against an ungodly nation; meaning either the Philistines, among whom he was; or his own nation, when they joined his son Absalom in rebellion against him: some understand it of the great numbers that were with Saul, when he was persecuted by him; O deliver me from the deceitful and unjust man; either Absalom, who, under pretence of a vow he had vowed in Hebron, got leave of David to go thither, and then engaged in a conspiracy against him; or Ahithophel, who had been his friend and acquaintance, but now joined with Absalom. It is true of Saul, who, under pretence of friendship, sought his ruin, and to whom he expressed himself almost in the same words here used; see Sa1 18:17.