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 56 — To the chief Musician upon Jonathelemrechokim, Michtam of David, when the Philistines took him in Gath.
Be merciful unto me, O God: for man would swallow me up; he fighting daily oppresseth me.
Mine enemies would daily swallow me up: for they be many that fight against me, O thou most High.
What time I am afraid, I will trust in thee.
In God I will praise his word, in God I have put my trust; I will not fear what flesh can do unto me.
Every day they wrest my words: all their thoughts are against me for evil.
They gather themselves together, they hide themselves, they mark my steps, when they wait for my soul.
Shall they escape by iniquity? in thine anger cast down the people, O God.
Thou tellest my wanderings: put thou my tears into thy bottle: are they not in thy book?
When I cry unto thee, then shall mine enemies turn back: this I know; for God is for me.
In God will I praise his word: in the LORD will I praise his word.
In God have I put my trust: I will not be afraid what man can do unto me.
Thy vows are upon me, O God: I will render praises unto thee.
For thou hast delivered my soul from death: wilt not thou deliver my feet from falling, that I may walk before God in the light of the living?