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 120 — A Song of degrees.
In my distress I cried unto the LORD, and he heard me.
Deliver my soul, O LORD, from lying lips, and from a deceitful tongue.
What shall be given unto thee? or what shall be done unto thee, thou false tongue?
Sharp arrows of the mighty, with coals of juniper.
Woe is me, that I sojourn in Mesech, that I dwell in the tents of Kedar!
My soul hath long dwelt with him that hateth peace.
I am for peace: but when I speak, they are for war.