11
Ask for thyself a sign of the Lord thy God, in the depth or in the height.
12
And Achaz said, I will not ask, neither will I tempt the Lord.
13
And he said, Hear ye now, O house of David; is it a little thing for you to contend with men? and how do ye contend against the Lord?
14
Therefore the Lord himself shall give you a sign; behold, a virgin shall conceive in the womb, and shall bring forth a son, and thou shalt call his name Emmanuel.
The Brenton translation of the Septuagint is in the public domain.