Isaiah 7:4-6, 14

and say to him, ‘Take care and be calm, do not fear and be weak-hearted because of these two stumps of smoldering logs, on account of the fierce anger of [King] Rezin and Aram and of the son of Remaliah (Pekah, usurper of the throne of Israel). Because Aram, along with Ephraim (Israel) and the son of Remaliah, have planned evil against you (Judah), saying, “Let us go up against Judah and terrorize it; and let us breach its wall and tear it apart [each of us taking a portion] and set up the son of Tabeel over it as its [puppet] king,”

Therefore the Lord Himself will give you a sign: Listen carefully, the virgin will conceive and give birth to a son, and she will call his name Immanuel (God with us). [Is 9:6; Jer 31:22; Mic 5:3-5; Matt 1:22, 23]