He covenants with the Israelites as their God and also as the God of Abraham, Isaac and Jacob. This is the very substance of the covenant of grace on God’s part, embracing in itself the whole communication of God towards the perfecting and glorifying of sinful man. Hence he is set forth not only as the God of his people, but also as their Redeemer; as the merciful pardoner of sins; as a sanctifier, promising circumcision of the heart; as a faithful husband, having a marital care for his people; as a kind father, who begets sons, nourishes and cherishes them with paternal affection; as a gracious king, who placed his sanctuary in the midst of the people that he might dwell and walk with them, i.e., might hold communion with them, deeming them worthy of his gracious presence for direction in difficulties, protection in dangers, blessing in adversity and consolation in griefs.
Turretin, Institutes of Elenctic Theology XII.12,10