Dating the psalms
The corresponding number in the Septuagint differs because of a different division of certain Psalms.
But "All scripture is given by inspiration of God" (2 Timothy ).
So all the psalms are the Word of God "and is profitable for doctrine, for reproof, for correction, for instruction in righteousness: That the man of God may be perfect, throughly furnished unto all good works.
A difference exists, though, between the Syriac and Greek collections.
(“Songs of Praise”), a curious hybrid of a feminine noun and a masculine plural ending.
This is shown by the frequent indication of liturgical leaders interacting with the community (e.g., Ps 118:1–4).