The Book of Psalms is canonical in Judaism (Ketuvim) and Christianity (Old Testament), with its authority confirmed by ancient manuscripts (Qumran), the New Testament, and councils (Hippo, Carthage). The Ethiopian Orthodox Tewahedo Church, however, has a broader canon that includes Psalm 151 as an integral part of the Psalter, accepted as Holy Scripture also by Orthodox, Syriac, and Armenian traditions, demonstrating the historical diversity of biblical canons.
Psalms
Chapter 149
Praise ye the LORD. Sing unto the LORD a new song, and his praise in the congregation of saints.
Let Israel rejoice in him that made him: let the children of Zion be joyful in their King.
Let them praise his name in the dance: let them sing praises unto him with the timbrel and harp.
For the LORD taketh pleasure in his people: he will beautify the meek with salvation.
Let the saints be joyful in glory: let them sing aloud upon their beds.
Let the high praises of God be in their mouth, and a twoedged sword in their hand;
To execute vengeance upon the heathen, and punishments upon the people;
To bind their kings with chains, and their nobles with fetters of iron;
To execute upon them the judgment written: this honour have all his saints. Praise ye the LORD.