Psalms 111:9

He sent redemption unto his people -In their deliverance from Egypt. He has now sent it in a higher sense under the great Deliverer, the Saviour. He hath commanded his covenant for ever -He has ordained or appointed it. The covenant is here represented as if it were obedient to the will of God, or under his control. The covenant refers to his arrangements with his people; his assurances of favor, with the terms on which that favor will be shown.