God is the Creator of all things, the only qualified Judge of people. People communicate with God through prayers and believe He is responsible for miracles and blessings. God represents all that is good in the world. Christians believe that God had a Son, Jesus Christ, and that believing in Christ will earn one eternal salvation. They believe in a Trinity: God, the Son, and the Holy Spirit. Jews believe in only one God, called Adonai. Judaism is the oldest known monotheistic religion. Muslims, also, believe in only one God, called Allah.
To please God, people perform good deeds. Good people are rewarded after death while bad people are punished, although views on heaven and hell differ between religious streams. Jews and Christians believe that eventually, the Messiah (Christ, for Christians) will come to earth and usher in an age of peace and tranquility for believers.