It will usually manifest itself as a heavy dose of arrogance. I have personally heard several ministers say the Holy Ghost has lead them unto their doctrine and when you investigate their doctrine, you find it to be combative to Gods Word. The Holy Ghost will illuminate the Scriptures but will never contradict His Word. If you point this out to them, most of them will continue to believe a lie and be damned. The real heart-break of this is they are leading their flock into heresies and destruction.
Religious pride is a devastating stumbling block in our accepting salvation.
Let him know, that he which converteth the sinner from the error of his way shall save a soul from death, and shall hide a multitude of sins. All true christians, who believe in the Gospel of Jesus Christ, will maintain the character of the Scriptures. Please read it.