The Enchiridion 70
70 Almsgiving Will Not Atone for Sin Unless the Life Be Changed PL 40, 265
We must beware, however, lest any one should suppose that gross sins, such as are committed by those who shall not inherit the kingdom of God, may be daily perpetrated, and daily atoned for by almsgiving. The life must be changed for the better; and almsgiving must be used to propitiate God for past sins, not to purchase impunity for the commission of such sins in the future. For He has given no man license to sin, although in His mercy He may blot out sins that are already committed, if we do not neglect to make proper satisfaction.
Crimina eleemosynis non redimi, nisi vita mutetur. Sane cavendum est ne quisquam existimet infanda illa crimina, qualia qui agunt, regnum Dei non possidebunt, quotidie perpetranda, et eleemosynis quotidie redimenda. In melius quippe est vita mutanda, et per eleemosynas de peccatis praeteritis est propitiandus Deus; non ad hoc emendus quodam modo, ut ea semper liceat impune committere. Nemini enim dedit laxamentum peccandi : quamvis miserando deleat jam facta peccata, si non satisfactio congrua negligatur.