What if you're already pre-programmed to like your favorite color and your favorite food, and you just don't know it? Speaking of the Christian God, the bible says that he is all-knowing, all-powerful, and ever-present, which means he would know everything that happened in the past, what happens in the present, and what will happen in the future. The bible also says that God knows our innermost being and knew us before we were born. Therefore, he would know exactly when you were born, when you took your first step and when you said your first word. Furthermore, if God is all-knowing, then he would know your every thought and every decision that you have ever made or will ever make in the future. If all of this is true, as the bible testifies, then how is possible for mankind to have free will?