=(2) God as Father.=--One thing in particular was derived by the apostolic Church from Jesus--the conception of God as Father. This conception appears in the epistles of Paul as a matter of course; evidently it was firmly established among the readers; it no longer required defense or explanation. Yet it had not lost, through long repetition, one whit of its freshness; in Paul it is never a mere phrase, but always a profound spiritual fact.
Obviously this idea of the fatherhood of God was of particular importance for prayer. It taught the disciples "to draw near to God with all holy reverence and confidence, as children to a father, able and ready to help" them. A characteristic way of addressing God even in the Gentile churches of Paul was "Abba, Father." Gal. 4:6; Rom. 8:15. The Aramaic word "Abba" is sufficient to show that this hallowed usage was based ultimately upon the teaching and example of Jesus; the word was the very one that Jesus had used both in his own prayers, for example in Gethsemane, Mark 14:36, and in the "Lord's Prayer" which he taught to his disciples.
=(3) The Right of Sonship.=--What needs to be observed especially, however, is that the right of addressing God as "our Father" was not in the apostolic Church extended to all men. Certainly no justification for such an extension could have been found in the teaching of Jesus; it was not the unbelieving multitude, but his own disciples, to whom Jesus taught the Lord's Prayer. Matt. 5:1; 6:9; Luke 11:1, 2. Paul is even more explicit; the cry "Abba, Father" was to him a proof that a great change had taken place, that those who had been formerly under bondage to the world had now become sons of God. This change Paul represents especially under the figure of adoption, Gal. 4:5; men have to be adopted by God before they can call God Father; and adoption is accomplished only by the work of Christ. Vs. 4,5.
=(4) The Intercession of the Spirit.=--The cry, "Abba, Father" can never be uttered by sinful man alone, but only by the power of Christ's Spirit. The prayers even of the redeemed are faulty. But the Holy Spirit takes up their cry. "And in like manner the Spirit also helpeth our infirmity: for we know not how to pray as we ought; but the Spirit himself maketh intercession for us with groanings which cannot be uttered; and he that searcheth the hearts knoweth what is the mind of the Spirit, because he maketh intercession for the saints according to the will of God." Rom. 8:26, 27.