A Jew was converting to Christianity.

So a Jew named Moshe Greene wanted to convert to Christianity. So Moshe goes to a Roman Catholic church and tell the preist there he wanted to convert. So as he is getting baptized the priest is saying "you are no longer Moshe Greene, you are Paul Carpenter, you are not Moshe, you are Paul".So with that Paul became a Christian. Fastforward to Lent when the preist sees Paul coming out of a butcher shop with a bag of beef, so in order not to embarress Paul, the preist decides to talk with Paul after Lent so he can explain to the preist why he was coming out of the butcher's shop with beef in his hand. So Lent passes and the preist tells Paul he saw him come out of the butcher's shop, Paul responds by saying "Father Henry, you have it all wrong, you see after I bought the beef I went straight home and dip the beef in water while saying: this is not meat, it's fish, it's not meat it's fish, so technicallly I didn't sin!!"