'Multiply Thy Seed' in the Bible

and will multiply thy seed as the stars of the heavens, and will give to thy seed, all these lands, - And all the nations of the earth shall bless themselves in thy seed:

And Yahweh appeared unto him the same night, and said, I, am the God of Abraham thy father, - Do not fear for with thee, am, I, And I will bless thee and multiply thy seed, For the sake of Abraham my servant.