What do you make of a religious minister who does not practice what he preaches?

i know a guy who is a religious minister. he calls himself a reverend, although i think that this is a self professed title. He preaches well, or at least with good intentions i think. However, his own life seems a mess to me. I've heard allegations against him of ual misconduct within his marriage more than once and from more than one source. Including his ex-wife and some of my own relatives. I've personally seen him calling another woman his wife when I knew that there was no way that his divorce had been finalised as yet. I guess he tought he could marry himself to the new woman and it would be all right in the eyes of God as long as he felt that he had rid himself of all ties to his soon to be ex-wife. He lies, even about his age, and never seems to be able to settle down anywhere. As he puts it, "the devil is always on his tail". He tends to leave a mess behind wherever he goes, with people accusing him of all sorts of things, and i guess he just bails out after he decides he's had enough. His prophecies tend not to come true most of the time as well. What do you do with a person like this? His teachings are ok seem decent, but in his own life he seems very susceptible to temptations. would you trust a person like this?