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 101 — A Psalm of David.
I will sing of mercy and judgment: unto thee, O LORD, will I sing.
I will behave myself wisely in a perfect way. O when wilt thou come unto me? I will walk within my house with a perfect heart.
I will set no wicked thing before mine eyes: I hate the work of them that turn aside; it shall not cleave to me.
A froward heart shall depart from me: I will not know a wicked person.
Whoso privily slandereth his neighbour, him will I cut off: him that hath an high look and a proud heart will not I suffer.
Mine eyes shall be upon the faithful of the land, that they may dwell with me: he that walketh in a perfect way, he shall serve me.
He that worketh deceit shall not dwell within my house: he that telleth lies shall not tarry in my sight.
I will early destroy all the wicked of the land; that I may cut off all wicked doers from the city of the LORD.