II. 1. How this joint testimony of God’s Spirit and our spirit, may be clearly and solidly distinguished, from the presumption of a natural mind, and from the delusion of the devil, is the next thing to be considered. And it highly imports all who desire the salvation of God, to consider it with the deepest attention, as they would not deceive their own souls. An error in this is generally observed to have the most fatal consequences: the rather, because he that errs seldom discovers his mistake, till it is too late to remedy it. 2. And first, how is this testimony to be distinguished from the presumption of a natural mind? It is certain, one who was never convinced of sin, is always ready to flatter himself and to think of himself, especially in spiritual things, more highly than he ought to think. And hence, it is in no wise strange if one who is vainly puffed up by his fleshly mind, when he hears of this privilege of true Christians, among whom he undoubtedly ranks himself, should soon work himself up into a persuasion, that he is already possest thereof. Such instances now abound in the world, and have abounded in all ages. How then may the real testimony of the Spirit with our spirit, be distinguished from this damning presumption? 3. I answer, the holy scriptures abound with marks, whereby the one may be distinguished from the other. They describe in the plainest manner the circumstances which go before, which accompany, and which follow, the true, genuine testimony of the Spirit of God with the spirit of a believer. Whoever carefully weighs and attends to these, will not need to put darkness for light. He will perceive so wide a difference with respect to all these, between the real and the pretended witness of the Spirit, that there will be no danger, I might say, no possibility, of confounding the one with the other.