It sounds confusing! We can't know whether or not God has foreordained our sin, so we should always act in the preceptive will of God, right? That sounds futile, because no one can do that all the time. Plus, if God wants a certain outcome, then he may ordain the sin to accomplish it. I don't doubt what you are saying. I just think that the reality of life is that people, even believers, sin. My head is swimming!