Genesis 13:16 in the King James Version
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.
Context
15 for I will give all the land which you see to you and to your offspring forever.
16 I will make your offspring as the dust of the earth, so that if a man can count the dust of the earth, then your offspring may also be counted.
17 Arise, walk through the land in its length and in its width; for I will give it to you.”