Theses Sabbaticæ, or, The doctrine of the Sabbath wherein the Sabbaths I. Morality, II. Change, III. Beginning. IV. Sanctification, are clearly discussed, which were first handled more largely in sundry sermons in Cambridge in New-England in opening of the Fourth COmmandment : in unfolding whereof many scriptures are cleared, divers cases of conscience resolved, and the morall law as a rule of life to a believer, occasionally and distinctly handled / by Thomas Shepard ...

Thesis 40.

Hence therefore it followes, that although this particular [ 40] seventh day, which is the first of seven, be not particularly made mention of in the fourth Commandment; yet the last

of seven being abrogated, and this being instituted in its roome, it is therefore to be perpetuated and observed in its roome. For though it be true (as Mr. Brabourne urgeth) That New Institutions cannot be founded, no not by Analogy of propor∣tion, meerly upon Old Institutions; as because children were Circum∣cised, it will not follow that they are therefore to be baptized: and so because the Iewes kept that seventh day, that we may therefore keep the first day. Yet this is certaine, that when New things are instituted not by humane Analogy, but by Divine appoint∣ment, the Application of these may stand by vertue of old pre∣cepts and general Rules, from whence the Application even of old Institutions formerly arose. For we know that the Cul∣tus institutu•• in the New Testament in Ministry and Sacra∣ments, stands at this day by vertue of the second Command∣ment, as well as the instituted worship under the Old. And though Baptisme stands not by vertue of the institution of Circumcision, yet it being De novo instituted by Christ as the Seale of Initiation into Christs mystical Body, 1 Cor. 12.12. it now stands by vertue of that general Rule by which Cir∣cumcision it selfe was administred, viz That the Seale of ini∣tiation into Christs Body be applyed to all the visible mem∣bers of that Body: and hence children are to be now Baptized, as once they were Circumcised, being members of Christs Body. So the first day of the week being instituted to be the Lords Day or Lords Sabbath, hence it followes that if the first seventh which is now abrogated, was once observed, be∣cause it was the Lords Sabbath or the Sabbath Day which God appointed; by the very same Rule, and on the very same ground we also are bound to keep this first day being also the Sabbath of the Lord our God, which he hath now appointed anew under the New Testament.