The Letter

King Proetus cloaked his indignation, not wishing to violate the sacred obligations of hospitality by doing harm to his guest. But he contrived his revenge by asking Bellerophon to deliver a letter on his behalf to King Iobates of Lycia, his father-in-law. This is somewhat surprising in that writing hadn't been invented yet, except perhaps a rudimentary form used for inventory-keeping on the island of Crete and certain parts of the mainland. No wonder Bellerophon couldn't make out the meaning of the message he was to deliver. Either that or the letter was sealed - although for that matter "letters" hadn't been invented yet either.