Book I
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Jupiter hesitated for some time before consenting to grant the prayer of Thetis.
"This," said he, "is a serious matter, for by doing as you desire I may give offense to Juno, who has already been blaming me among the gods, saying that I aid the Trojans in battle. However, since you will have it so, I shall grant your request."
"And that thou Mayst be assured, behold, I give the nod; For this, with me, the immortals know, portends The highest certainty; no word of mine Which once my nod confirms can be revoked, Or prove untrue, or fail to be fulfilled."
BRYANT, _Iliad_,