Patrick Gillespie (1617-75) was a Scottish divine.  His older brother, George, was one of the few Scottish delegates to attend the Westminster Assembly.  A brief biography can be found here.

 

Attached below is a selection from his The Ark of the Testament Opened (1661), pgs. 152-64.  In it he deals with the variuos distinctions between God's covenants.  For Gillespie, there are three kinds of distinctions: (1) Specisical, (2) Gradual, or (3) "Circumstantiall."  The specisical distinction has to do with that between the covenant of works and the covenant of grace. 

 

In this section of the work, the reader will note Gillespie extensive interaction with the Amyraldian three-covenant position, espoused by John Cameron (Gillespie's fellow-Scot), Samuel Bolton, and others.  Building on the Puritan and Calvinistic consensus, he rejects the idea.  Note especially how he coordinates Cameron's view with that of the Arminians, especially Simon Episcopius (pg. 153). 

 

Also, note how Gillespie sees himself as articulating and building upon a consensus position of his fellow Puritans.  On page 154 he writes: "...but it is abudantly proved taht the Sinai covenant was a Covenant of Grace, so that I need not here insist upon it."  In the margin, he cites the works (found elsewhere on this site) by John Ball, Anthony Burgess, Francis Roberts, and Samuel Rutherford (see the margin on pg. 154 and elsewhere).  This is further confirmation of the fact that the vast majority of divines saw Sinai as essentially a covenant of grace, and not essentially a covenant of works. 

 

At the same time, he is willing to affirm that the moral law stated in the Ten Commandments is substantially the same as that given to Adam, and in this sense reminds Israel of the demands or the law of the covenant of works.  But this is a different thing (as Gillespie points out) from saying that the Mosaic covenant is a covenant of works.

 

Compare also his discussion on pgs. 157-58 on Gal. 4:22-24, in which he argues that the Apostle is not so much comparing the old and new testaments considered in themselves, but rather "between true believers and hypocrites, or such as live in the household of faith, trusting to their own righteousness."  This exegesis comes from Calvin's commentary on Gal. 4, which he explicitly cites. 

 

Enough commentary...look to the primary document and find out for yourself!