Specifically in terms of the Regulative Principle of Worship (not the "sufficiency of the psalter"), I am trying to understand how EP-proponents seek to uphold the RPW in proving the doctrine of Exclusive Psalmody for the NT Church. Is the gist of the argument proved by: (1) pointing out that God does not command different content of worship song in the NT (other than the Psalms of the OT that had been sung already for a long time up to that point)...in other words, that God doesn't modify this command, or by (2) interpreting "psalms, hymns, songs" as referring to the 150 Psalms and thus being a specific command regarding the content of worship song in the NT. (another possible argument to add, #3, would be that God has always commanded inspired praise song in His worship in the OT and this wasn't modified in the NT, but this is similar to #1 above)
Is that the main thrust of the EP argument, specifically in terms of the RPW?
Is that the main thrust of the EP argument, specifically in terms of the RPW?