Wilbur, John. A Narrative and Exposition of the Late Proceedings of New England Yearly Meeting, With Some of its Subordinate Meetings & Their committees, in Relation to the Doctrinal Controversy Now Existing in the Society of Friends: Prefaced by a Concise View of the Church, Showing the Occasion of its Apostacy, both Under the Former and Present Dispensations, With an Appendix. Edited from Record Kept, From Time to Time, of Those Proceedings, and Interspersed With Occasional Remarks and Observations. Addressed to the Members of the Said Yearly Meeting. New York: Piercy & Reed, Printers, 1854, pages 277-325.

J.J. Gurney (Essay On Love to God. p. 5): "In effccting this blessed change, &c. the Holy Spirit makes use of the Gospel of our Lord Jesus Christ, as his grand, appointed instrument. That Gospel written in thc Holy Scriptures, and preached by the Lord's messengers, is a spiritual weapon of heavenly mould; and when wielded by a divine hand, it penetrates the heart, and becomes 'the power of God unto salvation.'"

Contrast with

 Robert Barclay (Apol. Prop. V. & VI. p. 168.): "Thirdly, this saving spiritual light is the Gospel, which the apostle saith expressly is preached in every creature {p.289} under heaven; even that very Gospel whereof Paul was made a minister, Col. i. 23. For the Gospel is not a mere declaration of good things, being the power of God unto salvation to all those that believe, Rom. i. 16. Though the outward declaration of the Gospel be taken sometimes/or the Gospel, yet it is but figurativelyi and by a metonymy. For, to speak properly, the GosPel is this inward power and life which preacheth glad tidings in the hearts of all men, offering salvation unto them, and seeking to redeem them from their iniquities, and therefore it is said to be preached in every creature under heaven: whereas there are many thousands of men and women to whom the outward Gospel was never preached."
George Fox (Journal, Vol.. I. p. 251): "Waiting in the light, you will receive the power of God, which is the Gospel of peace; that you maybe shod with it, and know that in one another, which raiseth up the seed of God," &c.
(p. 401.) "For though ye: have the four books, yet the Gospel is hid to you; who are strangling at the work of God, and do not believe that Christ hath enlightened every one that cometh into the world."
(Vol. II. p. 25.) "in their reasoning, they said, 'the gospel was the four books of Matthew, Mark, Luke, and John,' and they called it natural. I told them, 'the Gospel was the power of God, which wasPreached before Matthew, Mark, Luke, and John, or any of them were printed, or written; and it was preached to every creature (of which a great part might 'never see, nor hear of those four books) so that every creature was to obey the power of God; for Christ, the spiritual man, would judge the world according to the Gospel, that is, according to his invisible power.'"