Hesiod, the Homeric Hymns and Homerica/Hymn XXII (To Poseidon)
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XXII
TO POSEIDON
I begin to sing about Poseidon, the great god, mover of the earth and fruitless sea, god of the deep who is also lord of Helicon and wide Aegae. A twofold office the gods allotted you, O Shaker of the Earth, to be a tamer of horses and a saviour of ships!
Hail, Poseidon, Holder of the Earth, dark haired lord! O blessed one, be kindly in heart and help those who voyage in ships!