The well of life

the well of life   He pitched backward into a pool of water to whose edge the furious combat had brought them. And there he lay, unmoving, while the monster roared its victory cry and Una, watching from afar, wept strickenly at the fall of her hero.   But it was no ordinary pool into which the knight had fallen. Its waters had rested in that land from earliest times, and its virtues had resisted even the dragon's foul presence. It was called the Well of Life, and had the power to cure the sick, to cleanse the sinful, to rejuvenate the aged, even to revive the dead.
   So, after a night of mourning and prayer, Una was stunned with joy to see her champion arise from the pool just as the sun rose to brighten the land. The knight seemed as if he had been reborn and baptized anew- his armour and weapons shining, his strength restored and enhanced.
-Edmund Spenser 1552-1599
The Faerie Queene, Modern Prose Adaptation by Douglas Hill
http://www.edgeofenclosure.org/epiphany1a.html