Apollo heard the prayer of Chryses, and he sent a deadly plague upon the Grecian army. With his silver bow, every clang of which was heard throughout the camp, the archer god darted his terrible arrows among the Greeks, smiting them down in great numbers.
He came as comes the night,
And, seated from the ships aloof, sent forth
An arrow; terrible was heard the clang
Of that resplendent bow. At first he smote
The mules and the swift dogs, and then on man
He turned the deadly arrow. All around
Glared evermore the frequent funeral piles.
Bryant, Iliad, Book I.
For nine days the arrows of death were sent upon the Greek army, and the funeral piles of the victims were continually burning, for it was the custom in those times to burn the bodies of the dead. On the tenth day of the plague Achilles called a council of the chiefs to consider how the anger of the god might be appeased, and he spoke before them, saying:
"Let us consult some prophet or priest who will tell us why Phœbus Apollo is so much enraged with us, and whether he may, when we shall have offered sacrifices upon his altar, take away this pestilence which is destroying our people."
Then Calchas, the soothsayer, arose and said:
"O Achilles, I can tell why the god is wroth against us, and willing I am to tell it, but perhaps I may irritate the king who rules over all the Argives, and in his anger he may do evil to me. Promise me, therefore, your protection, and I will declare why this plague has come upon the Greeks."
"Fear nothing, O Calchas," answered Achilles. "While I am alive not one of all the Greeks, not even Agamemnon himself, shall harm you."
"Fear nothing, but speak boldly out whate'er
Thou knowest, and declare the will of heaven.
For by Apollo, dear to Jove, whom thou,
Calchas, dost pray to, when thou givest forth
The sacred oracles to men of Greece,
No man, while yet I live, and see the light
Of day, shall lay a violent hand on thee."
Bryant, Iliad, Book I.