"Let there be light," said God, and forthwith light Ethereal, first of things, quintessence pure,
Sprung from the deep, and from her native East
To jouney through the aery gloom began,
Was not; she in a cloudy tabernacle
Sojourned the while. God saw the light was good,
And light from darkness by the hemisphere
Divided: light the Day, and darkness Night,
He named. Thus was the first day even and morn;
By the celestial choirs, when orient light
Exhaling first from darkness they beheld,
Birth-day of Heaven and Earth. With joy and shout
The hollow universal orb they filled.
And touched their golden harps, and hymning praised
God and his works; Creator him they sung,
Both when first evening was, and when first morn."
Paradise Lost Book 7 "The Argument" vs. 242-260