Series on EP in the ARP Cont…
III. The titles which the Holy Spirit has employed to designate these divine hymns indicate the particular use for which they were intended.
(a.) They have been entitled by the Holy Spirit the “Book of Psalms,” or Book of Praises. By this title they are referred to repeatedly in the New Testament. For example, our Lord, when speaking with reference to this portion of divine revelation, says: “David himself saith in the Book of Psalms.” (Luke 20:42.) And in accordance with this is the language of the Apostle Peter: “It is written in the Book of Psalms.” (Acts 1:20.)
The word “psalm” is of Greek derivation, and comes from a word which signifies to sing Psalms, then, are songs which are to be sung. And by giving to this collection of sacred songs the title of “Book of Psalms,” the Holy Spirit recognized them as songs of praise to be sung in the worship of God.
(b.) The same purpose is indicated by the title of many of the Psalms, in which they are inscribed to the chief musician; that is, to the man that was appointed to be the leader of divine songs in the temple, in the public worship of Israel.
(c.) They are called the “Songs of the Lord.” (1 Chron. xxv:7), which, like the expressions, “Table of the Lord,” “Supper of the Lord,” “Day of the Lord,” implies Divine authority and appointment.
(d.) They are called the “Songs of Zion” (Ps. cxxxvi:3), which implies that they were designated for the use of the church.
Dr. Chalmers complete article here…