§ 8. (7.) Contentment with the mere preparatives to this heavenly life, while we are utter strangers to the life itself, is also a dangerous and secret hinderance. When we take up with the mere study of heavenly things, and the notions of them, or the talking with one another about them; as if this were enough to make us heavenly. None are in more danger of this snare, than those that are employed in leading the devotions of others, especially preachers of the gospel. O how easily may such be deceived! while they do nothing so much as read and study of heaven; preach, and pray, and talk of heaven; is not this the heavenly life? Alas! all this is but mere preparation: This is but collecting the materials, not erecting the building itself: It is but gathering the manna for others, and not eating and digesting it ourselves. As he that sits at home may draw exact maps of countries, and yet never see them, nor travel toward them; so may you describe to others the joys of heaven, and yet never come near it in your own hearts. A blind man, by learning, may dispute of light and colors; so may you set forth to others that heavenly light, which never enlightened your own souls, and bring that fire for the hearts of your people, which never warmed your own hearts. What heavenly passages had Balaam in his prophecies, yet how little of it in his spirit? Nay, we are under a more subtle temptation, than any other men, to draw us from this heavenly life. Studying and preaching of heaven more resembles a heavenly life, than thinking and talking of the world does; and the resemblance is apt to deceive us. This is to die the most miserable death, even to famish ourselves, because we have bread on our tables; and to die for thirst, while we draw water for others, thinking it enough that we have daily to do with it, though we never drink for the refreshment of our own souls. § 9. (II.) Having thus shewed thee what hinderances will resist thee in the work, I expect that thou resolve against them, consider them seriously, and avoid them faithfully, or else thy labor will be in vain. I must also tell thee, that I here expect thy promise, as thou valuest the delights of these foretastes of heaven, to make conscience of performing the following duties: the reading of which, without their constant practice, will not bring heaven into thy heart. Particularly, be convinced that heaven is the only treasure and happiness;—labor to know that it is thy own—and how near it is;—frequently and seriously talk of it;—endeavor to raise thy affections nearer to it in every duty;—to the same purpose improve every object and event;—be much in the angelical work of praise; possess thy soul with believing thoughts of the infinite love of God; carefully observe and cherish the motions of the Spirit of God;—nor even neglect the due care of thy bodily health.