Many Christian doctrines raise difficult philosophical questions. For example, Christians have traditionally insisted that they worship a single God, while simultaneously identifying that God with a trinity comprised of three numerically distinct, fully divine persons: the Father, the Son, and the Holy Spirit. It is not easy to see how three divine persons add up to one God. Similarly, Christians have also asserted that a human man, Jesus of Nazareth, is also God-the-Son, the second person of the divine trinity. It is not easy to see how a human man, who is born, lives, and dies, could also be a fully divine being. Consider also the relationship between divine providence and human freedom. Are human beings free to accept or reject God, or does God alone decide who will accept or reject God? Any answer to this theological question will also assume some specific philosophical account of human freedom and moral responsibility.