105. And I think it is this Spirit of adoption and love which is called "The divine nature" in us, as it inclineth us to love God and holiness for themselves, as nature is inclined to self-love, and to food, and other necessaries. Not that the specific, essential nature, that is, substance or form, of the soul is changed, and man deified, and he become a god that was before a man; but his human soul or nature is elevated or more perfected (as a sick man by health, or a blind man by his sight) by the Spirit of God inclining him habitually to God himself, as in and for himself. (And this is all which the publisher of Sir H. Vane's notions of the two covenants and two natures, can soundly mean, and seemeth to grope after.)
106. By all this you see, that as the love of God hath a double self-love in us to deal with, so it dealeth variously with each: 1. Sensual, inordinate self-love it destroyeth; both as it consisteth in the inordinate love of sensual pleasure, and in the inordinate love of self or life. 2. Lawful and just self-love it increaseth and improveth to our further good, but subjecteth it to the highest, purest love of God.
107. By this you may gather what a confirmed christian is, even one in whom the pure love of God as God, and all things for God, is predominant and more potent than (not only the vicious, but also) the good, and lawful, and necessary love of himself.
108. Though christians therefore must study themselves, and keep up a care of their own salvation, yet must they much more study God, his greatness, wisdom, and goodness, as shining in his works, and word, and in his Son, and as foreseen in the heavenly glory; and in this knowledge of God and Christ is life eternal. And nothing more tendeth to the holy advancement and perfection of the soul, than to keep continually due apprehensions of the divine nature, properties, and glorious appearances in his works upon the soul, so as it may become a constant course of contemplation, and the habit and constitution of the mind, and the constant guide of heart and life.
109. The attainment of this would be a taste of heaven on earth: our wills would follow the will of God, and rest therein, and abhor reluctancy: all our duty would be both quickened and sweetened with love: self-interest would be disabled from either seducing us to sin, or vexing us with griefs, cares, fears, or discontents. We should so far trust soul and body in the will and love of God, as to be more comforted that both are at his will, than if they were absolutely at our own. And God being our all, the constant, fixing, satisfying object of our love, our souls would be constantly fixed and satisfied, and live in such experience of the sanctifying grace of Christ, as would most powerfully conquer our unbelief; and in such foretastes of heaven, as would make life sweet, death welcome, and heaven unspeakably desirable to us. But it is not the mere love of personal goodness, as our own perfection, that would do all this upon us.