Hi Reaper, you're welcome.
How did you visit the spirit-word?
As for the old man who have claimed to see Jesus; he may not be lying. He did see someone, but it's not Jesus
If my worldview is correct then that man is simply deceived by demons giving him what the Bible called "Lying wonders" (2 Thessalonians 2:9). There are people who have seen or received messages from Angels, but are they truly Angels from God? There are people who've claimed to see or have been visited by the spirits of their dead loved ones, but are they truly? And then there are those who practice divination and claimed that they are the oracle into the spirit world.
These spirits, Angels, etc, claimed to be good and bona fide but you don't know that. None of us do if we reject the solid backing of scripture. Without it, all we can go on is what they claimed to be and what we've experienced from them (good and/or bad). And the Bible says:
13 For such are false apostles, deceitful workers, transforming themselves into the apostles of Christ.
14 And no marvel; for Satan himself is transformed into an angel of light.
15 Therefore it is no great thing if his ministers also be transformed as the ministers of righteousness; whose end shall be according to their works.
- 2 Corinthians 11:13-15
The good that they do, or the benefits you get, is simply to keep you hooked into the lie they've created to keep you from God.