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 6 — To the chief Musician on Neginoth upon Sheminith, A Psalm of David.
O LORD, rebuke me not in thine anger, neither chasten me in thy hot displeasure.
Have mercy upon me, O LORD; for I am weak: O LORD, heal me; for my bones are vexed.
My soul is also sore vexed: but thou, O LORD, how long?
Return, O LORD, deliver my soul: oh save me for thy mercies' sake.
For in death there is no remembrance of thee: in the grave who shall give thee thanks?
I am weary with my groaning; all the night make I my bed to swim; I water my couch with my tears.
Mine eye is consumed because of grief; it waxeth old because of all mine enemies.
Depart from me, all ye workers of iniquity; for the LORD hath heard the voice of my weeping.
The LORD hath heard my supplication; the LORD will receive my prayer.
Let all mine enemies be ashamed and sore vexed: let them return and be ashamed suddenly.