Scripture doesn’t mention Trinity either and a host of other Christian verbage.......so they’re thumping a dead horse there.
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Scripture doesn’t mention Trinity because it is a totally man made bit of confusion, r5ising out of carnal men’s inability to understand how both the Father and The Son could have one spirit, so they invented a spirit that is separate from them, which is gobledygook.
All of the “Christian” confusion came out of the mid 4th century, much of it from Eusebius.