NET
7 Isaiah replied, “This is your sign from the Lord confirming that the Lord will do what he has said:
Darby
7 And this [shall be] the sign to thee from Jehovah, that Jehovah will do this thing that he hath spoken:
KJV
7 And this [shall be] a sign unto thee from the LORD, that the LORD will do this thing that he hath spoken;