Matthew Poole and continuators on Matthew 2:3

3 When Herod the King heard these things, he was troubled, and all Jerusalem with him.

Herod was hardly warm in his Kingdom, and had taken Ierusalem by Force, and was therefore much concerned, to hear that there was a new King born, and supposing him to have been all his Life acquainted with the Jewish Writings and Records where were Prophecies of the Messias, under the Notion of a King and not knowing that the Kingdom of the Messias, was not to be of this World, but being possessed of the ordinary Notion of the Iews, that the Messias should restore a Temporal Kingdom to Israel, he could not but be troubled at the News of one born, who was to be the King of the Iews, especially having a Confirmation of it by such an extraordinary means, as Persons coming from a far Country, and being directed to their Journey by some extraordinary impulse, upon the sight of a new Star; which pointed to Iudea, as the place to which it related; Herod upon this might justly think that his newly acquired▪ Kingdom would not last long. And tho most People are quickly weary of Conquerors, yet their former miseries being fresh in their minds, and the renewing of them likely upon a Change in the Government, it is no wonder if the generality of the People, were also troubled.