See, that does sound a lot like how Catholic theology tackles the issue of infallibility in regards to the Pope. The pope is protected from promulgating errors in doctrine. We've had our share of bad popes in the past, but they've never out right said something while speaking in their official capacity that contradicts what the Church has always taught. They're in a sense, protected by the Holy Spirit in a way so that they can't lead the Church astray. :) And we Catholics do also believe in direct personal revelation, but we're also not required to believe someone else's personal revelation. In instances where there have been reported visitations/miraculous visions/revelations, the Church is very careful to check them out thoroughly before declaring them "worthy of belief" or not.