2 Kings 19:6 Isaiah said to them, "Thus you shall tell your master,'Thus says Yahweh, "Don't be afraid of the words that you have heard, with which the servants of the king of Assyria have blasphemed me. (See NIV)
Isaiah 37:6 And Isaiah said to them, This is what you are to say to your master: The Lord says, Be not troubled by the words which the servants of the king of Assyria have said against me in your hearing. (See NIV)