Nevertheless so long as men are ignorant of God and indifferent to Him, they are not in any full sense His sons. We find, therefore, in the Bible another kind of sonship. God is our Father because He gives us more abundant life, a life of redemption from ignorance and sin. This is illustrated in the Old Testament by the choice of Israel and the great covenant promises involved in it, "I will be their God and they shall be My people," "I will be his Father and he shall be My son." In the New Testament we find the same principle in the choice by Christ of His Apostles and disciples for special privilege of knowledge and grace. This choice is perpetuated by Christ in His Church. Our Christian sonship is a special sonship. It is ours by Baptism wherein we are made members of Christ, children of God, and heirs of the kingdom of Heaven. Two practical considerations follow. First, if there are different levels of sonship there are different degrees of brotherhood. The message of the premiers is right. The hope of a brotherhood of humanity _does_ repose on the deeper spiritual truth of the Fatherhood of God. This brotherhood, however, is not a relationship which comes to us simply by nature; it is a relationship which in social, individual, national and international life must be morally won. Again, those who have Christian knowledge and grace have not received this privilege for themselves alone. They are God's sons who have special gifts in trust on behalf of all mankind who have them not. The call to Missionary work is based on this responsibility, and will remain so until "the earth is filled with the knowledge of God as the waters cover the sea."