Whether theft is always a sin?

❌ Objection 1 : It would seem that theft is not always a sin. For no sin is commanded by God, since it is written (Ecclus. 15:21): "He hath commanded no man to do wickedly." Yet we find that God commanded theft, for it is written (Ex. 12:35,36): "And the children of Israel did as the Lord had commanded Moses [Vulg.: 'as Moses had commanded']. . . and they stripped the Egyptians." Therefore theft is not always a sin.

❌ Objection 2 : Further, if a man finds a thing that is not his and takes it, he seems to commit a theft, for he takes another's property. Yet this seems lawful according to natural equity, as the jurists hold. [*See loc. cit. in Reply.] Therefore it seems that theft is not always a sin.

❌ Objection 3 : Further, he that takes what is his own does not seem to sin, because he does not act against justice, since he does not destroy its equality. Yet a man commits a theft even if he secretly take his own property that is detained by or in the safe-keeping of another. Therefore it seems that theft is not always a sin.