Why is it acceptable to join a religion that was created by a single man? [Spirituality & Religion]

For example, King Henry created the Church of England. How do we know if God approves this religion? How do we know that any religion is approved? Why is it acceptable for religions to evolve? Various religions have changed over time due to cultural pressures. How do we know these changes are “authorized”? (Don’t get me wrong it’s a good thing that religions evolve)