Chan cautions us to be careful about people who teach or counsel or talk that are not directed by God, and are not  following His Word. Chan  encourages believers to take heed of the teachings in  Matthew 24 and 2 Peter 2.

 This is from a sermon Francis Chan gave in December 2009.

Then if any one says to you, 'Lo, here is the Christ!' or 'There he is!' do not believe it. 24 For false Christs and false prophets will arise and show great signs and wonders, so as to lead astray, if possible, even the elect. Matthew 24

1 But false prophets also arose among the people, just as there will be false teachers among you, who will secretly bring in destructive heresies, even denying the Master who bought them, bringing upon themselves swift destruction. 2 And many will follow their licentiousness, and because of them the way of truth will be reviled. 3 And in their greed they will exploit you with false words; from of old their condemnation has not been idle, and their destruction has not been asleep. 2 Peter 2