There are at least 3 versions of a quote, with 2 having different attributions. What is the original, who said it, and what does the quote mean?

The following comes from a book by Jason Meyer, *The End of the Law: Mosaic Covenant in Pauline Theology*, pages 2 & 3 (B&H 2010). It was about historical digging into those O.T. and N.T. themes. The quote that seems to have come down to today is: > Run, John, run, the Law commands, But gives us neither feet nor > hands. Far better news the Gospel brings, It bids us fly and gives > us wings. An earlier version of this is in Charles Spurgeon’s writings, *The Salt-Cellars: Being a Collection of Proverbs, Together with Homely Notes Thereon*, page 200 (London, Passmore & Alabaster, 1889) It goes: > Run, John and work, the Law commands, yet finds me neither feet nor > hands. But sweeter news the Gospel brings; it bids me fly and lends me > wings!” Spurgeon attributes this to an **English revivalist and hymn writer, John Berridge (1716 – 1793)**. The third quote, however, is: > A rigid matter was the Law, demanding brick, denying straw. But when > with Gospel tongue it sings, it bids me fly and gives me wings. This is ascribed to **17th-18th Century Scottish preacher, Ralph Erskine (1685 – 1752)**. I note its reference to the Israelites in Egypt being commanded to increase their brick-production, but this time they had to find their own straw to do so. **My question is two-fold: (1)** to ask if anybody with knowledge of religious quotes from that era to clarify what would have been the original quote, and who originated that quote. Even if that cannot be done, **I further ask (2)** what would the quote actually mean to Protestant Christians from the end of the 17th century to the end of the 18th?