Our church-away-from-church in Colorado had an interesting, but not atypical, banner up on the front wall behind the altar area.
Top Left-A Holy Bible open book
Top Right-A cross
Bottom left-A dove
Bottom Right-A crown
They iconography would easily point to the cross representing Jesus, the dove representing the Holy Spirit and the crown representing (in a bit more of a stretch than the other two gimmies) God the Father.
If that imagery holds up, the Bible is not only on a par with the Trinity but the lead item of it, since we read things from top to bottom and right to left in our culture.
It comes before the cross.
It comes before and is above the Holy Spirit. That's a very Baptist take on things,
It comes well before God's Kingdom. More missional folks, especially in your emergent church quadrant, would want to put the Kingdom well before the Bible.
The iconography essentially put the Bible in as the senior member of the Godhead.
John 1:1, "In the beginning was the Word..." come quickly to mind. In that sense, the Word predates the cross.
John continues on- "...and the Word was with God, and the Word was God. He was with God in the beginning." That's something you could proof-text to justify things.
However, verse 14 throws cold water on that-
The Word became flesh and made his dwelling among us. We have seen his glory, the glory of the one and only Son, who came from the Father, full of grace and truth.
Mr. Logos is Jesus per John. Is the iconography doubling up on Jesus in the top row? Or do we have a Quadity with the Bible as the fourth member?
Catholics sometimes seem to have their own Quadity with Mary as the quartet-maker; the old joke has Michelangelo doing his basso-profundo Jesus impersonation atop the Sistine Chapel while a lady is doing her Rosary down below-"Shuddap, I'm talkin' to ya mother!" That's an exaggeration of where Mary sits, well below the Godhead in real Catholic doctrine, but she seems to have a higher ranking at times.
Do evangelicals have their own Quadity, with the Bible promoted to the four-hole? It seems that way very, very often.