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 61 — To the chief Musician upon Neginah, A Psalm of David.
Hear my cry, O God; attend unto my prayer.
From the end of the earth will I cry unto thee, when my heart is overwhelmed: lead me to the rock that is higher than I.
For thou hast been a shelter for me, and a strong tower from the enemy.
I will abide in thy tabernacle for ever: I will trust in the covert of thy wings. Selah.
For thou, O God, hast heard my vows: thou hast given me the heritage of those that fear thy name.
Thou wilt prolong the king's life: and his years as many generations.
He shall abide before God for ever: O prepare mercy and truth, which may preserve him.
So will I sing praise unto thy name for ever, that I may daily perform my vows.