 The Chorus, apparently oblivious to the preceding act, praises the fraternal affection of Atreus which has put aside the hatred and differences between the brothers, in much the same way as the calm which follows a storm illustrates.A Messenger who was present, reports the cruel deed of Atreus, and how the three children were killed and then served up to Thyestes at the horrible feast.The Chorus, observing the going down of the Sun, becomes alarmed, fearing that the whole fabric of the universe should dissolve into fragments and lapse into eternal chaos.