Book 5
24.7
Yet another image of Zeus comes next, and the inscription on it says that it was dedicated by the Chersonesians of Cnidus from enemy spoils. On either side of the image of Zeus they have dedicated images of Pelops and of the river Alpheius respectively. The greater part of the city of Cnidus is built on the Carian mainland, where are their most noteworthy possessions, but what is called Chersonnesus is an island lying near the mainland, to which it is joined by a bridge.
24.8
It is the inhabitants of this quarter who dedicated to Zeus the offerings at Olympia, just as if Ephesians living in what is called Coresus were to say that they had dedicated an offering independently of the Ephesians as a body. There is also by the wall of the Altis a Zeus turned towards the setting of the sun; it bears no inscription, but is said to be another offering of Mummius made from the plunder of the Achaean war.
24.9
But the Zeus in the Council Chamber is of all the images of Zeus the one most likely to strike terror into the hearts of sinners. He is surnamed Oath-god, and in each hand he holds a thunderbolt. Beside this image it is the custom for athletes, their fathers and their brothers, as well as their trainers, to swear an oath upon slices of boar's flesh that in nothing will they sin against the Olympic games. The athletes take this further oath also, that for ten successive months they have strictly followed the regulations for training.