Used several times in the Bible, the phrase “both small and great” (or “both the small and the great”) represents various levels or degrees of involvement in a spiritual state. For instance, when the angels strike men with blindness, “both small and great,” in Genesis 19:11, it means removing all concepts of truth, both general ideas and specifics based on those ideas. When reward is promised to “those who fear Your name, small and great” in Revelation 11:18, it means people who love things having to do with the Lord in a lesser degree and in a greater degree.

(References: Apocalypse Revealed 527, 604, 810, 832; Arcana Coelestia 2384; The Apocalypse Explained 514 [11])