What is the relationship between meaning and purpose?

I think purpose is necessary but not sufficient for meaning. For example, in The Matrix, the people had a purpose but their existence lacked meaning. One possible approach would be to argue that if the person accepts the purpose, then his/her existence has meaning, otherwise it doesn't. However, with most traditional religions, the purpose is supposedly determined by the creator, not by the follower, but most followers accept that purpose unquestioningly. (Admittedly, those adherents who chose their religion, as opposed to accepting whichever one was most prevalent in their country or community or family, may have factored what each religion says about their life's purpose when choosing a religion, and so this statement might not apply to them.) If that's the case, then if those people discovered they were in Matrix-like enslavement, would they unquestioningly accept that their creator had a justifiable purpose in doing this to them? You might assume the answer is no, but consider that most adherents of traditional religions find a way to accept that their creators don't intervene to stop atrocities like billions starving and babies being murdered, and they also accept that they might not be able to comprehend their creator's means and ends, so they might be able to rationalize a meaningful existence based on a purpose they don't agree with or understand.