in Christianity, the first of the three persons of the Trinity, who begets the Son and from whom the Holy Spirit proceeds
God the Father is a title given to God in various religions, most prominently in Christianity. In mainstream trinitarian Christianity, God the Father is regarded as the first person of the Trinity, followed by the second person, God the Son (Jesus Christ), and the third person, God the Holy Spirit. Since the second century, Christian creeds included affirmation of belief in "God the Father (Almighty)", primarily as his capacity as "Father and creator of the universe". However, in Christianity the concept of God as the father of Jesus Christ goes metaphysically further than the concept of God as the Creator and father of all people, as indicated in the Apostle's Creed where the expression of belief in the "Father almighty, creator of heaven and earth" is immediately, but separately followed by in "Jesus Christ, his only Son, our Lord", thus expressing both senses of fatherhood.
Read more or edit on Wikipedia