Atos 8

Atos 8:20

He who through ignorance wishes to buy is less guilty than he who sells the gift of God, making it a business transaction. And, if you sell what you have received as a gift, you will be deprived of its grace, as if you had been sold to Satan. Furthermore, you are introducing into the church, where we have been entrusted with the body and blood of Christ, the bartering of material for spiritual things. — LETTER 53