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 7:9-10

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

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 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;