The following links outline our fundamental beliefs, and will take you to the online version of our booklet, The Fundamental Beliefs of the United Church of God. Additional booklets expanding these topics are available free of charge at ucg.org. God the Father, Jesus Christ and the Holy Spirit The Word of God Satan the Devil Humanity Sin and God's Law The Sacrifice of Jesus Christ Three Days and Three Nights Repentance Water Baptism The Sabbath Day The Passover The Festivals of God God's Food Laws Military Service and War Promises to Abraham God's Purpose for Humanity The Church Tithing The Resurrections Jesus Christ's Return