There is infinite grace in every divine covenant, inasmuch as it is established on promises. Infinite condescension it is in God that he will enter into covenant with dust and ashes, with poor worms of the earth. And in this lies the spring of all grace, from out of which all the streams of it do flow. And the first expression of it is in laying the foundation of it in some undeserved promises. And this was that which became the goodness and greatness of his nature, the means in accordance with which we are brought to adhere to him in faith, hope, trust, and obedience, until we come to the enjoyment of him; for that is the use of promises, to keep us in adherence to God, as the first original and spring of all goodness, and the ultimate satisfactory reward of our souls, 2 Cor. 7: 1.
Coxe, Nehemiah; Owen, John. Covenant Theology: From Adam to Christ (Kindle Locations 2855-2861). RBAP. Kindle Edition.