According to Romans 9:31-33, I think we can not earn God plan just like these people, trying to get right with God by keeping his laws. We may think that Church attendance, church work, giving offerings and being nice will be enough, after all we have played by the rules, haven't we? But Paul words sting this approach never succeeds. Paul explains that God plan is not for those who try to earn his favour by being good. Its for those who realize they can never be good enough and so must depend on Christ. Only by putting our faith in what Jesus Christ has done will we be saved. If we do that, we will never be disappointed (Ashamed )