Romans 4:16-18

Therefore, the promise comes by faith, so that it may be by grace and may be guaranteed to all his descendantsnot only to those who are of the law but also to those who are of the faith of Abraham, for he is the father of us all

Hebrews 11:12

Therefore from one man, and him as good as dead, were born descendants as many as the stars of heaven and as the innumerable grains of sand by the seashore.

Revelation 7:9

After this I looked, and behold, a great multitude which no one could count, from every nation and all tribes and peoples and tongues, standing before the throne and before the Lamb, clothed in white robes, and palm branches were 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, the promise comes by faith, so that it may be by grace and may be guaranteed to all his descendantsnot only to those who are of the law but also to those who are of the faith of Abraham, for he is the father of us all
Hebrews 11:12
Therefore from one man, and him as good as dead, were born descendants as many as the stars of heaven and as the innumerable grains of sand by the seashore.
Revelation 7:9
After this I looked, and behold, a great multitude which no one could count, from every nation and all tribes and peoples and tongues, standing before the throne and before the Lamb, clothed in white robes, and palm branches were in their hands;