Glossa Ordinaria
Catena Aurea · Matthäusevangelium 6
No man can serve two masters: for either he will hate the one, and love the other; or else he will hold to the one, and despise the other. Ye cannot serve God and mammon.
(ord.) By mammon is meant the Devil, who is the lord of money, not that he can bestow them unless where God wills, but because by means of them he deceives men.