What do you think about these verses in regard to people claiming to see or hear Jesus?
"Then if any man shall say unto you, Lo, here is Christ, or there; believe it not.
For there shall arise false Christs, and false prophets, and shall shew great signs and wonders; insomuch that, if it were possible, they shall deceive the very elect.
Behold, I have told you before.
Wherefore if they shall say unto you, Behold, he is in the desert; go not forth: behold, he is in the secret chambers; believe it not.
For as the lightning cometh out of the east, and shineth even unto the west; so shall also the coming of the Son of man be." - Matthew 24:23-27
Unfortunately history and the present day are rife with people claiming to personally see or hear Jesus (watch Sid Roth's "It's Supernatural" for example) Jesus said, however, that when He comes again, it will not be secretive or to one person, but the entire world will see Him return.
And yes, the Holy Spirit guides individual believers, but He does not contradict Scripture.
As for the people you refer to always testing what they heard with Scripture, why then are so many of the doctrines in the Catholic Church at odds with Scripture?
It's an honest question, though I know from previous conversations, that we will not agree.
God bless