We have a divine book of praise, yes. We have other divine books with praise among other things. Why it would be sinful to sing other divine songs is beyond me. But even with a divine book of praise, mandating it’s exclusive use cannot in any way be derived from the fact that it is there.
Do you see how this train of thought is not remotely logical:
We have a divine book of praise. Therefore we must sing exclusively from it.
Hebrews and Deuteronomy are sermons. We have two biblical books that are full sermons. Therefore, we can only read these sermons in worship.
The Psalms of David are also called prayers. Therefore we must pray exclusively from the Psalms.
The Psalms are a book of praise. Therefore we must only praise God (singing or speaking) with Psalms.
These are not valid arguments. I could also state that when ice cream consumption increases, so do drownings (which is true). Therefore, ice cream consumption makes one more likely to drown. (The real correlation is that people consume more ice cream in hotter weather, which is also when people swim.)
All this to say, a correlation does not prove a command, and especially does not overturn a biblical pattern of praise, and does not justify calling the praise of others sinful. I am fully convinced that EP is a commandment of man— a man made tradition that binds the conscience, alienates people in their own churches that don’t agree with them, and hinders the praises offered by the children of the King.
I’m really sorry you feel that way.
As for the logic, I’m afraid I can’t follow your logic. Surely no judicious reformed interpreters have ever held the view that under the RPW ministers are required to read the sermons in Deuteronomy as a way of performing the duty of preaching. If a minister just read a sermon from Deuteronomy and sat down, I don’t think anyone here would accept he had been engaged in preaching. If a congregation sings a psalm however, I think all would accept that they had sung praise to God.
While the psalms contain prayers, it’s expressly called a book of praises. There’s no book of prayers that we’ve been commanded to repeat in prayer. We have been required to sing the psalms, but no where in the NT or elsewhere do we see prayers being read out of a book.
I also don’t understand the point about correlation that you’re trying to make.. but I think we’re poles apart in our sentiments, because I think that singing the songs Christ Himself sang, and composed and gave to us to sing is not limiting at all, it is most enriching, and so much of the reformed church historically has sung only the psalms in worship, with some few inspired songs as exceptions. The practice of churches today is very much a novelty compared to the majority of the practice in Geneva, Holland, and Britain.
As you can see from the view of a many of godly and learned Puritans,
"Now though spiritual songs of mere human composure may have their use, yet our devotion is best secured, where the matter and words are of immediately divine inspiration; and to us David's Psalms seem plainly intended by those terms of “psalms and hymns and spiritual songs,” which the apostle useth (Eph. 5:19; Col. 3:16). But then ’tis meet that these divine composures should be represented to us in a fit translation, lest we want David, in David; while his holy ecstasies are delivered in a flat and bald expression. The translation which is now put into thy hands [1650 Scottish Metrical Psalter] cometh nearest to the original of any that we have seen, and runneth with such a fluent sweetness, that we thought fit to recommend it to thy Christian acceptance; some of us having used it already, with great comfort and satisfaction."
— Thomas Manton; Henry Langley; John Owen; William Jenkyn; James Innes; Thomas Watson; Thomas Lye; Matthew Poole; John Milward; John Chester; George Cokayn; Matthew Mead; Robert Franklin; Thomas Doolittle; Thomas Vincent; Nathaniel Vincent; John Ryther; William Tomson; Nicholas Blaikie; Charles Morton; Edmund Calamy the Younger; William Carslake; James Janeway; John Hickes; John Baker; and Richard Mayo.
If most on the PuritanBoard today wouldn’t be prepared to put their amen to what all these Puritans have said above, then I think it shows the reformed church today is very far removed from the sentiments of the those godly men who came before us.
Minutes of the Westminster Assembly, April 15, 1646:
"Ordered, That the Book of Psalms, set forth by Mr. Rous, and perused by the Assembly of Divines, be forthwith printed in sundry volumes: And that the said Psalms, ***and none other***, shall, after the first day of January next, be sung in all Churches and Chapels within the Kingdom of England, Dominion of Wales, and Town of Berwick upon-Tweede; and that it be referred to Mr. Rous, to take care for the true printing thereof.—The Lords concurrence to be desired herein."
As well as the Dutch church and divines:
National Synod of Dort, 1578, Art. 76.: “The Psalms of David, in the edition of Petrus Dathenus, shall be sung in the Christian meetings of the Netherlands Churches (as has been done until now), abandoning the hymns which are not found in Holy Scripture.”
National Synod of Middelburg, 1581, Art. 51: “Only the Psalms of David shall be sung in the church, omitting the hymns which one cannot find in Holy Scripture.”
National Synod of Gravenhage, 1586, Art. 62: “The Psalms of David shall be sung in the churches, omitting the hymns which one does not find in Holy Scripture.”
Wilhelmus à Brakel (1635-1711): “The decision of the Dutch Synods has been very correct indeed, namely, that none other but the Psalms of David are to be used in the churches” (The Christian’s Reasonable Service, trans. Bartel Elshout [USA: Soli Deo Gloria, 1995], vol. 4, pp. 34-35).