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 142 — Maschil of David; A Prayer when he was in the cave.
I cried unto the LORD with my voice; with my voice unto the LORD did I make my supplication.
I poured out my complaint before him; I shewed before him my trouble.
When my spirit was overwhelmed within me, then thou knewest my path. In the way wherein I walked have they privily laid a snare for me.
I looked on my right hand, and beheld, but there was no man that would know me: refuge failed me; no man cared for my soul.
I cried unto thee, O LORD: I said, Thou art my refuge and my portion in the land of the living.
Attend unto my cry; for I am brought very low: deliver me from my persecutors; for they are stronger than I.
Bring my soul out of prison, that I may praise thy name: the righteous shall compass me about; for thou shalt deal bountifully with me.