Christ's first sermon : Or, The absolute necessity, Gospel duty and Christian practice of repentance, opened and applied. Wherein what repentance is, and the necessity thereof to salvation, is plainly discovered; with the great folly and desperate madness of all those that delay and put off repentance unto a sick-bed, or old age: together with the great benefit, joy, and comfort, that shall be to the souls of all those that timely and truly repent. By John Hart, D.D.