We are made in God’s image. We are a trinity ourselves -— body, soul (the mind and emotions), and spirit (the part of us that is alive unto God).
There are many glimpses of the heavenly realm in the bible...most notably in Daniel 7:
Dan 7:9 "I watched till thrones were put in place, And the Ancient of Days was seated; His garment was white as snow, And the hair of His head was like pure wool. His throne was a fiery flame, Its wheels a burning fire;
Dan 7:10 A fiery stream issued And came forth from before Him. A thousand thousands ministered to Him; Ten thousand times ten thousand stood before Him. The court was seated, And the books were opened.
Dan 7:11 "I watched then because of the sound of the pompous words which the horn was speaking; I watched till the beast was slain, and its body destroyed and given to the burning flame.
Dan 7:12 As for the rest of the beasts, they had their dominion taken away, yet their lives were prolonged for a season and a time.
Dan 7:13 "I was watching in the night visions, And behold, One like the Son of Man, Coming with the clouds of heaven! He came to the Ancient of Days, And they brought Him near before Him.
Dan 7:14 Then to Him was given dominion and glory and a kingdom, That all peoples, nations, and languages should serve Him. His dominion is an everlasting dominion, Which shall not pass away, And His kingdom the one Which shall not be destroyed.
Also Revelation:
Rev_22:1 And he showed me a pure river of water of life, clear as crystal, proceeding from the throne of God and of the Lamb.
Rev_22:3 And there shall be no more curse, but the throne of God and of the Lamb shall be in it, and His servants shall serve Him.
Who has thrones? The members of the Godhead...God and the lamb. No throne...in other words...no divine presence for anyone else in this vision.
Rev_7:10 and crying out with a loud voice, saying, "Salvation belongs to our God who sits on the throne, and to the Lamb!"
Rev_5:13 And every creature which is in heaven and on the earth and under the earth and such as are in the sea, and all that are in them, I heard saying: "Blessing and honor and glory and power Be to Him who sits on the throne, And to the Lamb, forever and ever!"
Again this would be a terrible slight to the holy spirit IF it is a divine, 3rd member of the Godhead. But then again scripture is very consistent...Father and son are the members of the Godhead. What trinitarians call "the holy spirit" is their work, or actions, in our reality. They bust through their dimensional space into and what we see and experience in our limited 3d reality is called their holy spirit. It's not a 3rd person, but is their influence in our world.