Romans 4:16-18

Therefore it is by faith, in order that it may be by grace; that the promise may be sure to all the seed; not only of the law, but also of the faith of Abraham; who is the father of us all,

Hebrews 11:12

Therefore indeed they were born of one, and those things of one having died, as the stars of heaven for multitude, and as the sands which are by the sea, which are innumerable.

Revelation 7:9

After these things I saw, and behold a great multitude, which no one was able to number, out of every nation, and tribes, and peoples, and tongues, standing before the throne, and before the Lamb, clothed in white robes, and palms in their hands;

Treasury of Scripture Knowledge

Summary

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.

Bible References

General references

Romans 4:16
Therefore it is by faith, in order that it may be by grace; that the promise may be sure to all the seed; not only of the law, but also of the faith of Abraham; who is the father of us all,
Hebrews 11:12
Therefore indeed they were born of one, and those things of one having died, as the stars of heaven for multitude, and as the sands which are by the sea, which are innumerable.
Revelation 7:9
After these things I saw, and behold a great multitude, which no one was able to number, out of every nation, and tribes, and peoples, and tongues, standing before the throne, and before the Lamb, clothed in white robes, and palms in their hands;