[Psalm 73]

"...since the Left invented that term 10 years ago to refer to Christians of some sort."

Oh stop.
It's a term from the 1500's to designate Christian churches that emphasize the teachings and authority of the Scriptures, as opposed to the institutional "authority" of the Church machine.
And stressing that salvation is achieved (only) by personal faith in Jesus Christ as savior.

[Rome2000]

Whatever you say.

Jesus had Peter set up the Church.

Some German Apostate came along and gummed up the works about 1500 years later.

Homosexuals and lesbians abound in the "clergy" spawned by Luther.