'Multitude' in the Bible

"[As for] me, behold, my covenant [shall be] with you, and you shall be the father of a multitude of nations.

Your name shall no longer be called Abram, but your name shall be Abraham, for I will make you the father of a multitude of nations.

But his father refused and said, "I know, my son; I know. He also shall become a people, and he also shall be great, but his younger brother shall be greater than him, and his offspring shall become a multitude of nations."