'Thousand' in the Bible

Jehovah, God of your fathers, is adding to you, as ye are, a thousand times, and doth bless you as He hath spoken to you.

And thou hast known that Jehovah thy God He is God, the faithful God, keeping the covenant, and the kindness, to those loving Him, and to those keeping His commands -- to a thousand generations,

How doth one pursue a thousand, And two cause a myriad to flee! If not -- that their rock hath sold them, And Jehovah hath shut them up?