“If you think this doctrinal change is bad... just wait until the gospel itself is re-defined.”
Long, long, long ago.
“Long, long, long ago.”
If you read the NT, right out of the starting gate! False teachers being addressed right and left. From those apostolic writings (indeed the whole of Scripture) we can tell who is antichrist and who is not. They set the standard by which all after them are judged true/false concerning the Gospel.