In the year that king Uzziah died I saw also the Lord sitting upon a throne, high and lifted up, and His train filled the temple. Isaiah 6:1

Observe that in Isaiah’s vision he not only saw the Lord “upon a throne high and lifted up,” but he saw that “His train filled the temple.” so that in that temple there was room for no one else. The robes of this great King filled all the holy place; and neither priests nor offerers could there find standing room. It is a great thing to see how Jesus fills the heavenly places; in Him dwelleth all the fullness of the Godhead. Let it be acknowledged to be so in heaven, for the glory of our Redeemer fills every street of the upper city, every mansion of the Father’s house. In the church below, which is also His temple, among His spiritual people, the glory of the Lord Jesus engages and occupies every heart. They feel that there is none other in whom they can trust, none other whose words they will receive, none other in whom they glory; the Lord Christ is all in all to us, and we know no other Master or Saviour. His train fills the temple. I trust it is so among us. From Sabbath to Sabbath the one glory of this Tabernacle is the person and work of Jesus. What a glory hath God put upon the Only Begotten Son, whom He hath raised from the dead that He should be head over all things to His church, which He fills with His life, light, and love. Nor may we forget that all the things that exist are in a sense His temple, and the whole universe is filled with His train; for “He hath ascended up far above all heavens that He might fill all things.” Glory be unto our ascended and reigning Lord.~ C.H. Spurgeon

https://www.blueletterbible.org/Comm/spurgeon_charles/sermons/1844.cfm