Hebrews 11:12

Therefore there sprang even from one, and him as it were dead, as the stars of heaven for multitude, and as the sand which is on the sea-shore innumerable.

Revelation 7:9-10

After this I saw, and behold a great multitude, which no man could number, of all nations, and tribes, and people, and tongues, standing before the throne and before the Lamb, clothed with white robes and palms in their hands.

Treasury of Scripture Knowledge

Summary

As the host of heaven cannot be numbered, neither the sand of the sea measured: so will I multiply the seed of David my servant, and the Levites that minister unto me.

Bible References

The host

Hebrews 11:12
Therefore there sprang even from one, and him as it were dead, as the stars of heaven for multitude, and as the sand which is on the sea-shore innumerable.
Revelation 7:9
After this I saw, and behold a great multitude, which no man could number, of all nations, and tribes, and people, and tongues, standing before the throne and before the Lamb, clothed with white robes and palms in their hands.