Most of the Calvinistically-inclined Baptists use the 1689 Confession otherwise known as the London Confession. Of course there was the earlier 1644 Calvinistic Baptist Confession which came before the Westminster Confession of Faith and the 1658 Savoy Declaration of Faith.
Anyway,(from my green 41 page copy)here is what the Preface to the 1677 said in part:
"It is now many years since diverse of us...did conceive ourselves under a necessity of publishing a Confession of our Faith,for the information and satisfaction of those that did not throughly understand what our principles were,or had entertained prejudices against our profession...This was put forth about the year 1643,in the name of seven congregations then gathered in London..."
"Forasmuch as this confession is not now commonly to be had;and also that many others have since embraced the same truth which is owned therin;it was judged necessary by us to join together in giving a testimony to the world of our firm adhering to those wholesome principles..."
"We did conclude it necessary to confess ourselves the more fully and distinctly,...and finding no defect in this regard in that fixed on by the Assembly,and after them by those of the Congregational way,we did conclude it best to retain the same order in our present confession...for the most part without any variation of the terms...making use of the very same words with them both...This we did to...convince all that we have no itch to clog religion with new words,but to readily acquiece in that form of sound words which hath been used by others before us...In those things wherein we differ from others,we have expressed ourselves with all candor and plainness...Contention is most remote from our design in all that we have done in this manner..."
Anyway,(from my green 41 page copy)here is what the Preface to the 1677 said in part:
"It is now many years since diverse of us...did conceive ourselves under a necessity of publishing a Confession of our Faith,for the information and satisfaction of those that did not throughly understand what our principles were,or had entertained prejudices against our profession...This was put forth about the year 1643,in the name of seven congregations then gathered in London..."
"Forasmuch as this confession is not now commonly to be had;and also that many others have since embraced the same truth which is owned therin;it was judged necessary by us to join together in giving a testimony to the world of our firm adhering to those wholesome principles..."
"We did conclude it necessary to confess ourselves the more fully and distinctly,...and finding no defect in this regard in that fixed on by the Assembly,and after them by those of the Congregational way,we did conclude it best to retain the same order in our present confession...for the most part without any variation of the terms...making use of the very same words with them both...This we did to...convince all that we have no itch to clog religion with new words,but to readily acquiece in that form of sound words which hath been used by others before us...In those things wherein we differ from others,we have expressed ourselves with all candor and plainness...Contention is most remote from our design in all that we have done in this manner..."