In the second place, Paul is like Jesus in his doctrine of the fatherhood of God. That doctrine, it will probably be admitted, was characteristic of Jesus; indeed the tendency in certain quarters is to regard it as the very sum and substance of all that Jesus said. Certainly no parallel to Jesus' presentation of God as Father has been found in extra-Christian literature. The term "father" is indeed applied to God here and there in the Old Testament. But in the Old Testament it is usually in relation to the people of Israel that God is thought of as Father rather than in relation to the individual. Even in the Old Testament, it is true, the conception of the fatherhood of God is not without importance. The consciousness of belonging to God's chosen people and thus being under God's fatherly care was immensely valuable for the life of the individual Israelite; it was no mere product of an unsatisfying state religion like the religions of Greece or Rome. There was preparation in Old Testament revelation, here as elsewhere, for the coming of the Messiah. In Jewish literature outside of the Old Testament, moreover, and in rabbinical sources, the conception of God as Father is not altogether absent.[91] But it appears comparatively seldom, and it lacks altogether the true content of Jesus' teaching. Despite all previous uses of the word "father" as applied to God, Jesus was ushering in a new era when He taught His disciples to say, "Our Father which art in heaven." [91] Bousset, _Die Religion des Judentums_, 2te Aufl., 1906, pp. 432-434. This conception of the fatherhood of God appears in Paul in just the same way as in Jesus. In Paul as well as in Jesus it is not something to be turned to occasionally; on the contrary it is one of the constituent elements of the religious life. It is no wonder that the words, "God our Father," appear regularly at the beginnings of the Epistles. The fatherhood of God in Paul is not something to be argued about or defended; it is altogether a matter of course. But it has not lost, through repetition, one whit of its freshness. The name "Father" applied to God in Paul is more than a bare title; it is the welling up of the depths of the soul. "Abba, Father" on the lips of Paul's converts was exactly the same, not only in form but also in deepest import, as the word which Jesus first taught His disciples when they said to Him, "Lord, teach us to pray."