Winslow was a Puritan reformer in England who appears to know the Holy Spirit well! Below is an excerpt from his work “The Holy Spirit: An Experimental and Practical View”. “Experimental theology” was quite important to the puritans of that day. In a nutshell, “experimental” is shorthand for practical experiences of grace that the believer can recognize and rejoice in. Experimental theology is somewhat of a lost discipline, and though it has almost universally fallen out of favor I find it an indispensable tool in pastoral care and discipleship. Perhaps more on that later! For now enjoy the reading!
The Spirit dwells in the believer as the ever-living Spirit of all grace and comfort. All that is really holy and gracious in a child of God is found in the work of the indwelling Spirit. All the holy breathings and desires of the soul, all the longings for God and for conformity to His will and image, all that is lovely and like Jesus in the saint, are the result of this gracious act of the eternal Spirit. The Lord Jesus Himself would direct us to this truth. John 4.14: “Whoever drinks of the water that I shall give him shall never thirst; but the water that I shall give him shall be in him a well of water springing up into everlasting life.” That this well of water is the indwelling of the Spirit, seems clear from the loth verse: “Jesus answered and said unto her, If you knew the gift of God,” etc.; that “gift of God” was the Holy Spirit, alluded to again still more emphatically in ch. 7. 38, 39: “He that believes on me, as the scripture has said, out of his belly shall flow rivers of living water. (But this spoke he of the Spirit, which those who believe on him should receive: for the Holy Spirit was not yet given; because that Jesus was not yet glorified.”)
Here is a gracious truth. The Spirit in every believer is a deep and living well of all spiritual blessings. He dwells in the soul “not like a stagnant pool, but like an ever-living fountain that flows at all seasons of the year, in heat and cold, and in all external circumstances of weather, whether foul or fair, wet or dry.” Nature could not produce that which the indwelling Spirit accomplishes in the saints of God. The hungering and the thirsting for righteousness, the rising of the heart in filial love to God, the sweet submission to His sovereign will, the longing for more knowledge of Christ, the constant struggling with the law of sin, the mourning over the indwelling principle of sin; all this is above and far beyond nature. It is the fruit, the precious fruit, of the indwelling spirit.
It may be, reader, that your heart is often anxious to know in what way you may distinguish between nature and grace, how you may clearly discern between that which is legal and that which is spiritual, between that which is the work of man, and that which is the work of God. In this way you may trace the vast difference- that which at first came from God, returns to God again. It rises to the source where it descended. Divine grace in a sinner’s heart is a springing well- “a well of water springing up into eternal life.” Did nature ever teach a soul the plague of its own heart? Never! Did nature ever lay the soul in the dust before God, mourning and weeping over sin? Never! Did nature ever inspire the soul with pantings for God and thirstings for holiness? Never! And did it ever endear the throne of grace, and make precious to the soul the atoning blood, the justifying righteousness of Jesus? Never! never! All this as much transcends the power of nature as the creating of a world. Is this your real state, reader? O look up! “Flesh and blood” did not reveal it to you- but the eternal God has revealed it and that by the indwelling of His own blessed Spirit in your heart.
read it all here