Romans 4:16-18

That is why all is made to depend upon faith, that all may be God's gift, and in order that the fulfillment of the promise may be made certain for all Abraham's descendants-not only for those who take their stand on the Law, but also for those who take their stand on the faith of Abraham. (He is the Father of us all;

Hebrews 11:12

And so from one man--and that when his powers were dead--there sprang a people as numerous 'as the stars in the heavens or the countless grains of sand upon the shore.'

Revelation 7:9

After this, in my vision, I saw a vast throng which no man could number, of men from every nation and of all tribes, and peoples, and languages. They stood in front of the throne and in front of the Lamb, robed in white, holding palm branches 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
That is why all is made to depend upon faith, that all may be God's gift, and in order that the fulfillment of the promise may be made certain for all Abraham's descendants-not only for those who take their stand on the Law, but also for those who take their stand on the faith of Abraham. (He is the Father of us all;
Hebrews 11:12
And so from one man--and that when his powers were dead--there sprang a people as numerous 'as the stars in the heavens or the countless grains of sand upon the shore.'
Revelation 7:9
After this, in my vision, I saw a vast throng which no man could number, of men from every nation and of all tribes, and peoples, and languages. They stood in front of the throne and in front of the Lamb, robed in white, holding palm branches in their hands.