'Blasphemed' in the Bible

Isaiah said to them, "You must say this to your master: 'Thus says Yahweh: "You must not be afraid because of the words that you have heard, [with] which the servants of the king of Assyria have blasphemed me.

Whom have you taunted and blasphemed, and against whom have you raised up [your] voice and lifted your eyes upward? To the holy one of Israel!