Ambrose of Milan — as excerpted in the Catena Aurea on Luke 20:19-26

“Be unwilling then, if thou wouldest not offend Cæsar, to possess worldly goods. And thou rightly teachest, first to render the things which be Cæsar’s. For no one can be the Lord’s unless he has first renounced the world. Oh most galling chain! To promise to God, and pay not. Far greater is the contract of faith than that of money.”