I am Sir Oracle,

And when I ope my lips, let no dog bark!

William Shakespeare (1564-1616): The Merchant of Venice. Act i. Sc. 1.

Or if Sion hill

Delight thee more, and Siloa's brook, that flow'd

Fast by the oracle of God.

John Milton (1608-1674): Paradise Lost. Book i. Line 10.

Socrates . . . .

Whom well inspir'd the oracle pronounc'd

Wisest of men.

John Milton (1608-1674): Paradise Regained. Book iv. Line 274.