Is he? Haw can he be credible if he is engaging in major sins? How much damage has he done to how people view "the Word" and the power of salvation if he doing the things that contradict what he preaches?
How can God allow those people to be soured and mislead by people representing him who are in many cases more vile than the very people they are preaching to?
Anther big kink in the armor of the alleged "word of God" in the bible.
Is he what? How do you know that he is engaging in major sins, unless his sins come out in the open? And if we all know that he is engaging in major sins, then he won't be credible. If he is not credible, then how can people be mislead by him?
If he is engaging in major sins, whether in secret or in the open, he has just as much of an opportunity as anyone to repent and get saved. He also has as much free choice not to. It is his soul. As for anyone who may have put such a man in a pedestal, the Bible warns against putting anyone on a pedestal, preacher or not.