This is something I hope our eminent scholar Kresge will address.
When and where did this concept come from?
And how did it because a Christian belief tantamount to a tenet?
How does this square with the Trinity?
That is, if it is true for what certain Christians would have it (that the Trinity justifies or substantiates this equation)? How come they don't forward the notion that the Holy Ghost = God with the same fervor?
How come you don't hear or get the impression that Christians aim to worship, praise or otherwise revere the Holy Spirit in the same way they do Jesus?