For the LORD is good; his mercy is everlasting; and his truth endureth to all generations.
For the Lord is good - as is shown by the salvation which He has imparted to His people, and in them at the same time to the whole world (Hengstenberg) (Psalms 25:8; Psalms 34:8; Psalms 86:5).
His mercy ... and his truth (endureth) to all generations - (Isaiah 54:8-10). These are two features of His goodness.