'Amphitheater' in the Bible

So the city was filled with confusion, and they rushed all together into the amphitheater, dragging along Gaius and Aristarchus, Macedonians who were Paul’s traveling companions.

Even some of the provincial officials of Asia, who were his friends, sent word to him, pleading with him not to take a chance by going into the amphitheater.

For, I think, God has exhibited us apostles at the end of the line, like men sentenced to death [and paraded as prisoners in a procession], because we have become a spectacle to the world [a show in the world’s amphitheater], both to angels and to men.