(2.) We must have an affecting sense or knowledge of the guilt of sin; and, as a relief against it, must be acquainted with the doctrine of the free grace of God, displayed in the gospel, and founded in the blood of Jesus, whereby sin is pardoned. We are also to be fully convinced of the almighty power of the Holy Ghost, whereby alone it can be subdued, and of the method he takes therein to make the redemption purchased by Christ, effectual to answer that end. (3.) We are to endeavour, in some measure, to know God as our Father, and covenant-God in Christ, who bestows on his people the rich and splendid entertainment of his house, and satisfies them with the abundance of his goodness, pursuant to what Christ has purchased. And we must also know what it is to deal with him as those who see themselves obliged herein to devote themselves to him as their God; and what large expectations they may have from him, whom he has avouched to be his peculiar people; and how this is a foundation of that humble boldness with which they are encouraged to come _unto the throne of grace, that they may obtain mercy, and find grace to help in time of need_, Heb. iv. 16. Moreover, we are not only to enquire, whether we are apprehensive of the excellency, glory, and suitableness of those great things, that are revealed in the gospel, to answer our particular exigencies, and render us happy in the enjoyment of God; but whether the knowledge hereof makes a due impression on our hearts, is of a transforming nature, and has a tendency to regulate the conduct of our lives, and put us on the application of these great things to ourselves? As to the degree of our knowledge we must enquire, whether it be only a single apprehension that the doctrines of the gospel are true, or, at most, contains in it some general ideas of their being excellent and worthy of the highest esteem; but whether we can prove them to be true, and render a reason of our faith, without which, it may, indeed, be rightly placed as to its object? But it cannot be said to be deeply rooted; and therefore it is exposed to greater danger of being foiled, weakened, or overthrown by temptation. We must also enquire, whether we grow in knowledge in proportion to those opportunities or means of grace that we are favoured with, which the apostle calls _growing in grace, and in the knowledge of our Lord and Saviour Jesus Christ_, 2 Pet. iii. 18.