“The covenant of grace, with respect to us, consists of the absolute promises of God, in which the mediator, the life to be obtained by him, the faith by which we may be made partakers of him, the benefits purchased by him, and the perseverance in that faith, in a word, the whole of salvation, and all the requisites to it, are absolutely promised.”

Herman Witsius, The Economy of the Covenants Between God and Man