'Dust of the Earth' in the Bible

And the Lord God made man from the dust of the earth, breathing into him the breath of life: and man became a living soul.

And I will make thy seed as the dust of the earth: so that if a man can number the dust of the earth, then shall thy seed also be numbered.

And thy seed shall be as the dust of the earth, and thou shalt spread abroad to the west, and to the east, and to the north, and to the south: and in thee and in thy seed shall all the families of the earth be blessed.