This is a blessed verse, full of divine things. Redemption is sent, given, free, full, everlasting. It is sent to his people, Exodus 3:9-10, explained by John 3:16-17; 1 John 4:14. It is all centered in his dear Son, Colossians 1:19; Colossians 1:19. It is forever unchangeable, and everlasting, Isaiah 51:8; Hebrews 13:8; Isaiah 54:10. And the whole is summed up and made sure in that distinguishing perfection of Jehovah, the holiness of his nature; as if God had pledged this divine attribute to his people in Christ, to convince them of his unalterable purposes. Psalms 89:34-35.
Related Commentaries of Psalms 111:9
Psalms 111:9
9 He sent redemption unto his people: he hath commanded his covenant for ever: holy and reverend is his name.