In Christianity, God is called "Father" in a more literal sense, besides being the creator and nurturer of creation, and the provider for his children. The Father is said to have an eternal relation to his only son, Jesus; which implies an exclusive and intimate familiarity: "No one knows the Son except the Father, and no one knows the Father except the Son and any one to whom the Son chooses to reveal him." (Matthew 11:27). In Christian theology, this is the revelation of a sense in which fatherhood is inherent to God's nature, an eternal relationship. To Christians, God the Father's relationship with humanity is as a father to children. Thus, humans in general are sometimes called children of God. To Christians, God the Father's relationship with humanity is that of creator and created beings, and in that respect he is the father of all. The New Testament says, in this sense, that the very idea of family, wherever it appears, derives its name from God the Father (Ephesians 3:15), and thus God himself is the model of the family. However, there is a deeper sense in which Christians believe that they are made participants in the eternal relationship of Father and Son, through Jesus Christ. Christians call themselves adopted children of God: But when the fullness of the time had come, God sent forth His Son, born of a woman, born under the law, to redeem those who were under the law, that we might receive the adoption as sons. And because you are sons, God has sent forth the Spirit of His Son into your hearts crying out, "Abba, Father!" Therefore you are no longer a slave but a son, and if a son, then an heir of God through Christ. (Epistle to the Galatians 4:4-7) The Image is based on a profile close-up of God from the iconic Michelangelo Buonarroti's Sistine Chapel painting of "The Creation of Adam"