Under the covenant of grace, by the blessed and eternal Son of God, it is revealed to us, with equal clearness, how the lost happiness of man is to be recovered; “the way we know:” “Believe in the Lord Jesus Christ and thou shalt be saved;” {327b} “set your affections on things above, not on things on the earth:” {327c} this is the way, call it by what name you please—a condition, or a means; it is the only way: happiness, here or hereafter, is attainable in no other. For this, we have the assurance of that word, which we have seen, under the first covenant, awfully fulfilled; of that word, which can never fail. My brethren, I cannot doubt, that we are all of us convinced of this truth: then let us pray fervently and faithfully, that the conviction may live in our hearts; that we may, from this day forward, go to “the fountain of living waters, and not hew out for ourselves broken cisterns, that hold no water;” {328a} that we may renounce the vanity of all human inventions, and seek our happiness in God, and God alone. “Be not conformed to this world; but be ye transformed by the renewing of your mind; that ye may prove, what is that good and acceptable and perfect will of God:” {328b} that ye may “have your fruit unto holiness, and the end everlasting life.” {328c} SERMON XVIII. THE KNOWLEDGE OF GOD REVEALED TO THEM THAT FEAR HIM. PSALM xxv. 14. _The secret of the Lord is with them that fear Him_; _and He will shew them His covenant_. THE secret of the Lord means, that which cannot be known unless the Lord reveal it; and the phrase here implies, an intimate knowledge of the divine perfections, of the dealings and dispensations of God; a holy and vital communion with Him; an entire trust in His providential care and government; together with that peace, which always dwells in the bosom of a true, penitent, pious believer. All this, including, as it does, a full acquaintance with the doctrines and duties, the privileges and comforts of the life of faith, is called “the secret of the Lord,” because it is hidden from the natural man, and cannot possibly be comprehended or discovered without divine revelation.