Furthermore, the Christian hymn is the natural development of the Hebrew psalm, just as Christianity is the consummation of the Jewish religion. The two systems of religion are related as closely as the foundation and the superstructure of a great temple. We shall find the Hebrew voice of worship not only leading the songs of the Apostolic Church, but through all the succeeding ages sounding the controlling note of all Christian praise. David and the sons of Asaph led the choirs and congregations in chapel and church and cathedral as truly as they did those in the temple and synagogues. Christianity gave the Psalms a larger, more inspiring message and a more literary and more musical setting; but the thrumming of David’s harp has been heard through all the long centuries and is still heard around the world. The Greek atmosphere in which the Early Church developed might be supposed to have influenced the character of the Apostolic hymnody; but the Greek Christians were not literary in culture, and the Greek religion had no congregational singing. It took several generations before it began to affect the form and music of the Christian hymnody, but eventually it was to become a formative force. I. SACRED SONG IN THE NEW CHRISTIAN CHURCH _The Rise of Sacred Song in Apostolic Times._ But when the baptism of the Holy Spirit vitalized and organized the Christian Church, the tide of sacred song began to swell. It had a great heritage from the dying Jewish church: its fundamental ideas, its laws, its prophets, its hope of the Messiah now transformed into a reality; but not the least of its inheritances were the habit of praise and worship, and the lyrics that gave them form. We read that the Church was filled with joy and praised God. Incidentally, we learn that, despite sufferings from cruel scourging, Paul and Silas sang hymns in the Philippian prison, showing that with the new wine of Christian joy there were created new bottles to contain it. We may be sure this was not an isolated instance, but the occurrence of an established practice. _Apostolic Emphasis of Sacred Song._ James says, “Is any merry, let him sing psalms.” Whether he meant David’s or “private” psalms is left open to conjecture. The American Revised Version translates it “praise.” Paul is most definite in recognizing “hymns and spiritual songs” as distinguished from “psalms.” Some commentators have interpreted the latter as David’s psalms, the “hymns” as the already accepted canticles, and the “spiritual songs” as the new songs, more or less improvised, that were sung by individuals, “teaching and admonishing one another,” “singing with grace in the heart.”