When Jove lay bless'd in his Alcmæna's charms,
Three nights in one he press'd her in his arms;
The sun lay set, and conscious nature strove
To shade her god, and to prolong his love.
From that auspicious night Alcides came;
What less could rise from Jove and such a dame?
May this auspicious night with that compare,
Nor less the joys, nor less the rising heir,
He strong as Jove, she like Alcmæna fair.

Matthew Prior

http://www.poemhunter.com/poem/to-a-friend-on-his-nuptials/