I. God is a Spirit; that is, an immaterial substance, without body or bodily parts; this he is said to be in John iv. 24. But if it be enquired what we mean by a Spirit, let it be premised, that we cannot fully understand what our own spirits, or souls are; we know less of the nature of angels, a higher kind of spirits, and least of all of the spirituality of the divine nature; however, our ideas first begin at what is finite, in considering the nature and properties of spirits; and from thence we are led to conceive of God as infinitely more perfect than any finite spirit. Here we shall consider the word spirit, as applied more especially to angels, and the souls of men; and let it be observed,
1. That a spirit is the most perfect and excellent being; the soul is more excellent than the body, or indeed than any thing that is purely material; so angels are the most perfect and glorious part of the creation, as they are spiritual beings, in some things excelling the souls of men.
2. A spirit is, in its own nature, immortal; it has nothing in its frame and constitution that tends to corruption, as there is in material things, which consist of various parts, that may be dissolved or separated, and their form altered, which is what we call corruption; but this belongs not to spirits, which are liable to no change in their nature, but by the immediate hand of God, who can, if he pleases, reduce them again to their first nothing.
3. A spirit is capable of understanding, and willing, and putting forth actions agreeable thereunto, which no other being can do: thus, though the sun is a glorious and useful being; yet, because it is material, it is not capable of thought, or any moral action, such as angels, and the souls of men, can put forth.
Now these conceptions of the nature and properties of finite spirits, lead us to conceive of God as a spirit. And,
(1.) As spirits excel all other creatures, we must conclude God to be the most excellent and perfect of all beings, and also that he is incorruptible, immortal, and invisible, as he is said to be in scripture, Rom. i. 23. and 1 Tim. i. 17.
Moreover, it follows from hence, that he has an understanding and will, and so we may conceive of him as the Creator and governor of all things; this he could not be, if he were not an intelligent and sovereign being, and particularly a spirit.[[48]]
(2.) The difference between other spiritual substances and God, is, that all their excellency is only comparative, viz. as they excel the best of all material beings in their nature and properties; but God, as a spirit, is infinitely more excellent, not only than all material beings, but than all created spirits. Their perfections are derived from him, and therefore he is called, The Father of spirits, Heb. xii. 9. and the God of the spirits of all flesh, Numb. xvi. 22. and his perfections are underived: other spirits are, as we have observed, in their own nature, immortal, yet God can reduce them to nothing; but God is independently immortal, and therefore it is said of him, that he only hath immortality, 1 Tim. vi. 16.
Finite spirits, indeed, have understanding and will, but these powers are contained within certain limits whereas God is an infinite spirit, and therefore it can be said of none but him, that his understanding is infinite, Psal. cxlvii. 5.
From God’s being a spirit, we may infer,