Reference: Holy One of Israel
Hastings
A title of God used with especial frequency by Isaiah to express His transcendence and majesty. The idea of God's holiness is, of course, much older than Isaiah, but to him, as to no one before, it was the central and most essential attribute of God, far more so than His power or majesty. We can trace this idea from the very moment of his call in the Temple. As he felt himself on that day standing in God's presence, his first thought was of his own uncleanness, and this wrung from him a cry of anguish (Isa 6:5; cf. St. Peter's cry in Lu 5:8). When this passed away, he heard the angelic choir chanting the refrain, 'Holy, holy, holy is the Lord of hosts.' From henceforth he thought of God most often as a pure, unique, spiritual Being removed from all the imperfections of earth