And what did Jesus tell those who believed in him that they are to do? He said to those who believed in him that they are to continue in his word, and that means live by what he taught. We are to be doers of the word and not hearers only.
As he spake these words, many believed on him.
Then said Jesus to those Jews which believed on him, If ye continue in my word, then are ye my disciples indeed
Although I disagree with you often...you are totally correct with what you say in this post. But... we don't become disciples by doing; Instead we do because we are His disciples.