95 We have an example of this, for when Judas had received the bread from Christ the devil entered into his heart, as though claiming his own property, as though retaining his right to his own portion, as though saying: He is not Yours but mine; clearly he is my servant, Your betrayer, plainly he is mine. He sits at table with You, and serves me; with You he feasts, but is fed by me; from You he receives bread, from me money; with You he drinks, and has sold Your Blood to me. And he proved how truly he spoke. Then Christ departed from him, Judas also himself left Jesus and followed the devil.
Source: Letters (New Advent)