The covenant of grace opened : wherein these particulars are handled; viz. 1. What the covenant of grace is, 2. What the seales of the covenant are, 3. Who are the parties and subject fit to receive these seals. From all which particulars infants baptisme is fully proved and vindicated. Being severall sermons preached at Hartford in New England. By that reverend and faithfull minister of the gospel, Mr. Thomas Hooker.