Psalms 2:5 - Joseph Benson’s Commentary on the Old and New Testaments

Then In the midst of all their plots and confidence of success; shall he speak unto them in his wrath That is, severely rebuke them, not only by his prophets and other messengers in words, but by dreadful judgments, the effects of his wrath, which he will execute upon them. He shall make them know, to their full conviction, by the disappointment of their schemes and the vengeance taken on them, 1st, That David is established king in Jerusalem; and, 2d, That the Messiah, his son, shall reign throughout all generations. In other words, by pouring out his indignation on the adversaries of his anointed king, he shall no less evidently convict and reprove their folly and impiety than if he had actually spoken to them in terrible majesty from his eternal throne. The word יבהלמו, jebahaleemo, in the next clause, rendered vex, and in the margin, trouble them, has a very strong meaning, implying “that God would put them into the utmost terror and consternation of mind, and deprive them of all power and ability of soul and body, to save themselves from the vengeance which should be executed upon them:” a prediction most awfully verified in the terrible destruction which came upon the murderers of Christ and the persecutors of his church and people.