Philippians 2:12-13 presents two seemingly contradictory ideas: "If it is to be, it is up to me" vs "Let go and let God." This tension has been the source of epic debate throughout Christian History via Augustine v Pelagius, Luther v Erasmus, and Calvin v Arminius. Rather than contention, this passage presents us with astouning wonder ("fear and trembling") as we appreciate that God Himself produces the desire and provides the power for us to go and do His work.