To believe in God the Father, therefore, is to believe in that God who is the Father of our Lord Jesus Christ; and to believe that He is also my Father, and as such has a fatherly affection toward me, for and account of Christ, in whom He has adopted me as His son. In a word, it is to believe: 1. That He is the Father of our Lord Jesus Christ. 2. The He is a Father to me for Christ’s sake.