Psalms 117:1

LXX2012⁽ⁱ⁾ ¹ (118) Alleluia. Give thanks to the Lord; for [he is] good: for his mercy [endures] for ever.

Online Parallel Study Bible

Psalms 117:1 An exhortation to praise God for his mercy and truth.

(Title.)This Psalm, the shortest in the whole collection, is written as a part of the preceding in thirty-two MSS.: it celebrates the deliverance from the Babylonian captivity, the grand type of the redemption of the world by the Messiah.
O praise.
Psalms 66:1; Psalms 66:4; Psalms 67:3; Psalms 86:9; Isaiah 24:15; Isaiah 24:16; Isaiah 42:10-12; Romans 15:11; Revelation 15:4
praise him.
Psalms 148:11-14; Psalms 150:6; Revelation 5:9; Revelation 7:9; Revelation 7:10