Isaiah 6:3

And one cried unto another, and said, Holy, holy, holy, [is] the LORD of hosts: the whole earth [is] full of his glory.

Ver. 3. And one cried to another.] Hymnum cantant τρισαγιον, and that, as it may seem, by way of antiphony, as those did. Exodus 15:1 ; Exo 15:21

And said, Holy, holy, holy.] Hereby showing their earnestness and insatiability in praising God. as Jer 22:20 Mat 23:39 The ingemination importeth strong affection. Infinitis vicibus iterant, saith Procopius; the holy angels "have no rest," and yet they have no unrest either, "day and night, saying, Holy, holy, holy Lord God Almighty which was, and is, and is to come." Rev 4:8 The ancient Rabbis, as R, Simeon Ben Joai, proved the trinity of persons from this text, saith Galatin, a appointing their posterity to repeat these words twice a day at least - viz., at the rising and setting of the sun, which also they do to this day, and when they do it they leap three times.

The whole earth is full of his glory.] Not the land of Judea only, but the wide world, as Psalms 97:6 ; Psalms 97:8 Isa 40:5 shall be full of God's glory, when the gospel shall be preached to all nations. This was for comfort to our prophet, that although his countrymen were cast off for their contumacy, yet he should not lose the fruit of his labours when once that "great mystery of godliness" was revealed; "God" - whom he had now seen upon the throne, and that purposely for his confirmation - "manifested in the flesh, justified in the spirit, seen of angels, preached unto the Gentiles, believed on in the world, received up into glory." 1Ti 3:16

a Lib. ii. cap. 1.