"Except your righteousness shall exceed the righteousness of the scribes and Pharisees, ye shall in no case enter into the kingdom of heaven." Matthew 5:20
The characteristic of a disciple is not that he does good things, but that he is good in motive because he has been made good by the super-natural grace of God. The only thing that exceeds right-doing is right-being.
Jesus Christ came to put into any man who would let Him a new heredity which would exceed the righteousness of the scribes and Pharisees. Jesus says - If you are My disciple you must be right not only in your living, but in your motives, in your dreams, in the recesses of your mind. You must be so pure in your motives that God Almighty can see nothing to censure.
