Paul went to heaven and saw many things, none of which he was permitted to talk about (2 Corinthians 12:4).
The Apostle John went to heaven and gave an inerrant report of things and conditions there (Revelation 4:1).
Lazarus was dead 4 days and never said one word about what he experienced during that time (John 11:39).
Ignore all of these unverified experiences. Stick closely to the Bible. "Examine everything carefully; hold fast to that which is good" (1 Thessalonians 5:21).
So you are the kind of believer that would also advise everyone not to listen to a pastor-teacher sermon...or teaching from the Bible, etc...
Rather, everyone should beware of men/women like you who do attack what other pastor-teachers would teach from the Bible. Your advise would be better applied to the Catholics who utilize far too many extra-biblical books and stories about things that are not Biblical, rather than the teachings of this pastor-teacher who is a Biblicist and only teaches from the Bible alone.
Your warning is without merit...it is simply your opinion above a Bible pastor-teacher. So what qualifications do you possess from God to attack other Bible pastor-teachers?