EVERY book in the NT, from Matthew to Revelation, contain warnings of false doctrine and teaching. Some of the warnings are specific (mention names) and others are generic. Some were mentioned by the Apostles while others by Christ Himself. It seems that God does not waste an opportunity to warn people about false doctrine and teaching.
Over 2000 years later, some in the church think that they are above this and those books in the NT were directed towards the early church and does not apply to them. They don’t see the Pharisee staring back at them in the mirror.
Now the major church denominations, who view themselves apparently as ‘Too Big to Fail’, tackle social issues, refusing to acknowledge that the inspired Word of God already addressed these issues, calling most of them SIN.
I remember something possibly pertinent mentioned about the church in Laodicea somewhere...
EVERY book in the NT, from Matthew to Revelation, contain warnings of false doctrine and teaching.