There are a lot of warnings in scripture about false teachers, false prophets and false Christ’s that would all be totally redundant if there wasn’t a need to alert people to the possibility of being turned from the truth to accept something contrary to the truth.
But not only are there warnings about deceivers, there are warnings about people who follow them. In Jeremiah a commentary on false prophets also turns an accusing finger upon those who welcome their messages: “My people love to have it so”; and Paul writes about people who collect teachers to appeal to their itching ears.
Without a “market” for deception, no deceiver would survive.
It seems today there is little difference between attitudes to theological ideas and the consumption of news. Does it really matter if the source is reliable as long as its message supports a desired stance?
Often it takes only a very cursory (honest) look into a teaching or news source to assess its truthfulness, but unless there is a genuine desire FOR the truth, it is easy to dismiss clear evidence if it contradicts what we WANT to believe.
Likewise it’s easy to ignore serious flaws in a teaching or news source if it’s PROMOTING what we want to believe.
It’s sad fact that many (even professing Christians) really have no love of the truth, preferring to mould a more appealing (to them) version of “reality” to live by.