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 129 — A Song of degrees.
Many a time have they afflicted me from my youth, may Israel now say:
Many a time have they afflicted me from my youth: yet they have not prevailed against me.
The plowers plowed upon my back: they made long their furrows.
The LORD is righteous: he hath cut asunder the cords of the wicked.
Let them all be confounded and turned back that hate Zion.
Let them be as the grass upon the housetops, which withereth afore it groweth up:
Wherewith the mower filleth not his hand; nor he that bindeth sheaves his bosom.
Neither do they which go by say, The blessing of the LORD be upon you: we bless you in the name of the LORD.