omens

"Melchizedek says Santiago can find his treasure in Egypt by the pyramids. Initially, Santiago feels annoyed that Melchizedek does not give a more exact location, but then a butterfly appears. Melchizedek explains the butterfly is Santiago’s first omen and opens his cape to reveal a jeweled breastplate. Melchizedek gives Santiago two stones from the breastplate. He says the stones are called Urim and Thummim and they represent “yes” and “no.” They will help Santiago to read omens."

This information is in section 3 of the text.