Quest. But what ground hast thou for this thy hope? for a hope without a ground is like a castle built in the air, that will never be able to do thee any good, but will prove like unto that spoken of in Job 8, "Whose hope shall be cut off, and whose trust shall be" like "a spider's web. He shall lean upon his house, but it shall not stand; he shall hold it fast," as thou wouldst thy hope, it is like, "but it shall not endure" (Job 8:13-15).
Answ. My hope is grounded upon the promises; what else should it be grounded upon?
Reply. Indeed, to build my hope upon Christ Jesus, upon God in Christ, through the promise, and to have this hope rightly, by the shedding abroad of the love of God in the heart, it is a right-grounded hope (Rom 5:1-7).
Quest. But what promises in the Scripture do you find your hope built upon? and how do you know whether you do build your hope upon the promises in the Gospel, the promises of the new covenant, and not rather on the promises of the old covenant, for there are promises in that as well as in the other?
Answ. I hope that if I do well I shall be accepted; because God hath said I shall (Gen 4:7).
Reply. O soul, if thy hope be grounded there, thy hope is not grounded upon the Gospel promises, or the new covenant, but verily upon the old; for these words were spoken to Cain, a son of the old covenant; and they themselves are the tenor and scope of that; for that runs thus: "Do this, and thou shalt live. The man that doth these things shall live by them. If thou do well, thou shalt be accepted" (Lev 18:5; Eze 20:11; Rom 10:5; Gal 3:12; Gen 4:7).
Reply. Why, truly, if a man's doing well, and living well, and his striving to serve God as well as he can, will not help him to Christ, I do not know what will; I am sure sinning against God will not.
Quest. Did you never read that Scripture which saith, "Israel, which followed after the law of righteousness, hath not attained to the law of righteousness"? (Rom 9:30-32).
Object. But doth not the Scripture say, "Blessed are they that do
His commandments, that they may have right to the tree of life"?
(Rev 22:14).
Answ. There is first, therefore, to be inquired into, whether to keep His commandments be to strive to keep the Law as it is a Covenant of Works, or whether it be meant of the great commandments of the New Testament which are cited in 1 John 3:22,23—"And whatsoever we ask we receive of Him, because we keep His commandments, and do those things that are pleasing in His sight." But what do you mean, John? Do you mean the covenant of the Law, or the covenant to the Gospel? Why, "this is His commandment," saith he, "That we should believe on the name of His Son Jesus Christ, and love one another," as the fruits of this faith, "as He gave us commandment." If it be of the old covenant, as a Covenant of Works, then the Gospel is but a lost thing. If it were of works, then no more of grace; therefore it is not the old covenant, as the old covenant.