Christianity is about God reaching out his hand in friendship to mankind. Christians believe that the everything within the universe was created by God. God is a personal being, and by some mystery that we cannot understand, he is three, yet one: Father, Son and Spirit. He created people in his image, to love him. Yet every person has rebelled against God. But instead of turning his back on us, God the Son, became a man, Jesus, and lived among us, dying because of us - the death that we should have died. Jesus was crucified on a cross, but he rose from the dead, and now calls us to trust him, to love him and to repent of our rebellion. If we do this, then our relationship with God becomes restored, and God the Spirit lives within us, assuring us of the promise of everlasting life.