Meanwhile, at the Hall of Justice....
The robed man turns once again and faces the group.
"It is not a matter of trust, as you have demonstrated some ability to understand the magical arts."
Placing his hand upon his chin,"It is more a question of what your continued interest in this door is."
"As I recall, you are on a search and rescue mission to find some lost persons of interest, and as you can see, they could not be located behind this door, as it has not been opened in countless millenia."
"If your intentions are purely altruistic, then we have no quarrel, and, as a scholar, I appreciate help as much as anyone else, but since I have only known you for a span of minutes now, I have no sure way of knowing your true intentions."
Looking each of the members of your group over, he continues,"This search-and-rescue mission of yours, do you linger here because you are at an impass? Has the trail run cold? Since you are standing here before me, I can only assume that the people you are looking for once passed through here."
"I have been here several times in the past, so if you were to provide some information, I am sure I could point you in the right direction....."