There is great power in the temple by the blessing of Shri Hanuman himself. Hanuman is the symbolic of the mind. Prayer to hanuman gives us great confidence. He could have defeated all of the asuras in Lanka Himself, but he waited longer only to honour his Lord God Rama.
He is a Messenger ( tactful speech) is his art .He can even do hard negotiations if it comes to that. He drove hard bargain for Ravan's own good . Not accepting it meant Ravan's Destruction. He, in the process of negotiation also collected vital info about Ravana and his fort. Can a Messenger get any Smarter? We Think not!