Albert Barnes Commentary Psalms 149:1

"Praise ye Jehovah. Sing unto Jehovah a new song, And his praise in the assembly of the saints." — Psalms 149:1 (ASV)

Praise ye the Lord — Margin, Hallelujah. See the notes at Psalm 146:1.

Sing unto the Lord a new song — As if there was a new and special occasion for praise. This would be so if the psalm was composed on the return from the exile; on the rebuilding of the city; and on the re-dedication of the temple. On the meaning of the language, see Psalm 33:3, note; Revelation 5:9, note; Revelation 14:3, note; see also Psalm 96:1; Isaiah 42:10.

And his praise in the congregation of saints — In the assembly of the people of God. See Psalm 148:14, note; Psalms 111:1, note.