If he refuses to listen to them, report it to the Church. And if he refuses to listen to the Church, treat him as you would a Gentile or a tax collector.
For they said to you, “In the final age there will be scoffers who will follow their own ungodly passions.” It is these people who create divisions, who follow their natural instincts and do not possess the Spirit.
After you have suffered for a brief period, the God of all grace, who has called you to his eternal glory in Christ, will himself restore, confirm, strengthen, and support you.