This is a question that can be answered a thousand different ways by a thousand different people. It is a very personal question that cannot receive one simple answer.
By reading about Gods Divine Revelation
Qu'ran
died
bible/ scripture
bible/ scripture
You should recognize the value & not waste it.
You have to play a game. You have to recognize the gods and goddesses.
By his symbols. In particular, he carries a thunderbolt.
Philemon and Baucis fail to recognize their guests, Zeus and Hermes, because the gods are in disguise. The character who does recognize them is their pet goose, which transforms into an eagle at the end of the story.
Epistles
Because it is the first sign that he is a prophet and that he is gods messenger
The book of the Revelation of Jesus Christ to St. John, which is the last book in the New Testament.