John Gill's Exposition of the Whole Bible
Psalms 99 - Introduction
INTRODUCTION TO PSALM 99
This psalm, with the foregoing from Psalms 90:1 is ascribed to Moses by Jarchi and others; but cannot be his, since mention is made of Samuel in it, who lived many years after him. The Septuagint, Vulgate Latin, Syriac, Arabic, and Ethiopic versions, more rightly attribute it to David; the inscription of the Syriac version, after saying it is David's, subjoins,
"concerning the destruction of the Midianites, whom Moses and the people of Israel led captive;''
of which there is not the least mention in it; but it more truly adds,
"and a prophecy concerning the glory of the kingdom of the Messiah;''
as it undoubtedly is.