Isa 6:3 And one cried to another, and said, Holy, holy, holy, is Jehovah of Hosts; the whole earth full of His glory.
“Holy, Holy, Holy”
Here are the Seraphs flying around the Throne crying out three times “Holy Holy Holy”. Cp Numbers 6:24-26 (Thrice Blessed)
is Jehovah of Hosts
Yahweh (Jehovah) Saboath : The LORD of the Heavenly Armies of Angels which surround the Throne of God.
1Ki 22:19 And he said, Hear therefore the Word of Jehovah: I saw Jehovah sitting on His throne, and all the host of heaven standing by Him on His right hand and on His left.
2Ch 18:18 Again he said, And hear the Word of Jehovah. I saw Jehovah sitting on His throne, and all the host of Heaven were standing on His right hand and on His left.
Psa 103:21 Bless Jehovah, all His hosts, ministers of His who do His pleasure.
v. 3.d the whole earth full of His glory. [or the earth is the fullness of His Glory] (marg.); All things which He has made on earth express His Glory.