Isaiah 58:14

Turning from a false approach to the Sabbath, and all the Law, would mean turning to the Lord with the proper attitude of delight. Then the Israelites would experience the exaltation of being His partners and would enjoy the inheritance promised to their all-too-human ancestor Jacob (cf. Isaiah 58:1). If they would give themselves to God and others rather than pursuing selfish goals, they would experience personal and national fulfillment and receive His rewards. This was a promise from the mouth of Yahweh.