Isaiah 38:7

And this shall be a sign unto thee from the LORD, that the LORD will do this thing that he hath spoken;

This shall be the sign to you from Yahweh, that Yahweh will do this thing that he has spoken:

And this shall be the sign unto thee from Jehovah, that Jehovah will do this thing that he hath spoken:

And this `is' to thee the sign from Jehovah, that Jehovah doth this thing that He hath spoken.

This will be a sign to you from the LORD that He will do what He has promised: