Yes, someone to vouch for you is credentials enough. Failing that, read the material.
I find this an interesting case study: compare Ray Smith & bible-truths.com with another recent web-site whose author was banned here (P. C.)
In some ways, their approaches are similar, but there is a fine line that was crossed by one of them (guess who). Believe it or not, I think both
sites present some truth, but one twists it a little too far into judgement and damnation of any disagreers.
If I may indulge and paraphrase a little, this is how I see these two websites present their view. This is my own interpretation, not a direct quote of anything they said.
Ray Smith:God is love! Why would he torment people forever? Read the bible people and just believe what it says! Don't twist it to match babylon's man-made traditions. Snap out of it man, wake up and believe the bible. If you believe in eternal torment, you are a hypocrite! The bible has the truth!
Maybe a bit harsh (mneh, not really), but sometimes you need a harsh wakeup call to receive the truth.
Now lets look at the other website (who shall remain nameless):God is love! God has given me the truth to share with you. You should come study with us because we have the truth. If you do not then clearly you are rejecting men of God. Because I have the authority of God, you will be judged and damned (even though I believe in UR, so you will be reconciled eventually). But anyway... you DON'T KNOW THE TRUTH UNLESS YOU ACCEPT EVERYTHING I SAY AS TRUTH.
Perhaps I went a bit overboard there...
Anyway see the difference? They both may have some (or even alot) of the truth, but there is a fine line in being "harsh" or "judgmental".
Ray can be harsh sometimes, but he claims the bible as the authority, not himself.
And I didn't need credentials to determine either of these views - I already had a good idea within half an hour of reading each parties respective website.
The above is all my personal opinion, take it with a heavy helping of salt...