'Countless' in the Bible

I will indeed bless you, and I will greatly multiply your descendants so that they will be as countless as the stars in the sky or the grains of sand on the seashore. Your descendants will take possession of the strongholds of their enemies.

And they blessed Rebekah and said to her, "You [are] our sister; may you become countless thousands; and may your offspring take possession of the gate of his enemies."

Your descendants shall be as [countless as] the dust of the earth, and you shall spread abroad to the west and the east and the north and the south; and all the families (nations) of the earth shall be blessed through you and your descendants.