Note 26 at Mt 6:3: "Let not thy left hand know what thy right hand doeth" is simply a metaphor used by Jesus to stress secrecy (Mt 6:4). Of course, it is not possible to have one member of the body function independently of another (1Co 12:26), and so it is not always possible to conceal our alms. As stated in Mt 6:1, it is not the fact that we do alms before men that is wrong, but rather that the motive is to be seen by men.