Isaías 55

Isaías 55:1

He then who is wise is free, bought with the price of the heavenly oracles, with that gold, that silver of the Divine Word; bought with the price of blood (for it is no small thing to acknowledge one's Redeemer;) bought with the price of Grace: he who heard and understood the words, Ho every one that thirsteth, come ye to the waters, and he that hath no money, come ye, buy and drink and eat. — Letter 37, 15