Titus 1:15-16
To the pure, all things are pure, but to those who are corrupted and do not believe, nothing is pure. In fact, both their minds and consciences are corrupted.
They claim to know God, but by their actions they deny him. They are detestable, disobedient and unfit for doing anything good.
Dr. Matthew Harmon of Biblestudytools.com has a brief three point biblical plan for the Church.
I’ll give you the intro, you can visit the website for the plan
All one has to do is walk into most Christian bookstores or tune into so-called Christian radio/TV to realize that false teaching is alive and well. So how should a gospel-centered church respond?

Titus 1:10-16 shows us how. But before noting what that passage tells us, it is important to note that Titus 1:5-9 provides us with qualifications for elders. Within the context of Titus, then, the necessity of biblically qualified elders is in part rooted in the need to deal with false teaching.
Having established that, in Titus 1:10-16 Paul identifies three ways that gospel-centered churches handle false teaching:
I’m especially glad for the reminder about qualified elders. I’m not an elder, nor am I qualified. I always pray that my choice of sources and choice of words fit God’s plan. I hope those nice guys on TV do the same.