I searched all the books I could find, bearing on this question, and discovered, what I had never noticed before, that the early French and Genevan Reformers, with Calvin at their head, had taught the abrogation of the fourth commandment, as a ceremonial institution; and that they contended for a Sabbath, or stated day of worship, under the gospel, only as a wise and necessary human arrangement. I found that even Turretin, at a later period, had taught that the fourth commandment is _partly_ ceremonial, and that it was necessary to change the Sabbath from the seventh day, in order to put a difference between Jews and Christians. I found also, in my books, quotations, containing similar sentiments, from the celebrated Augsburg Confession. The only authors I could find who had attempted to prove, from the Scriptures, that the Sabbath has been changed from the seventh to the first day of the week, by divine authority, were, Turretin, and the framers of our Standards. Those authors appeared to depend _mainly_ for proof upon three texts of Scripture:--Acts 20:7; 1 Cor. 16:1, 2; and Rev. 1:10. When I came to examine these texts, I was surprised and mortified, to find that they contain neither the word "Sabbath," nor any other synonymous with it. True, I had always thought that the "Lord's day," Rev. 1:10, was the first day of the week; but my opponents contended that the terms refer more properly to the seventh, which God styles "my holy day," Is. 58:13; and when I remembered "his challenging a special propriety in the seventh," I could not well deny it. Moreover, I could not find a single passage asserting that the first is holier than any other day of the week, or that Christians were, in the Apostles' days, in the habit of holding religious meetings _regularly_ on that day. Neither could I discover that Christ or his Apostles had ever spoken, directly or indirectly, of keeping a day holy in honor of his resurrection; nor that that event, which is always held up as the occasion of the change of the Sabbath, is even once mentioned in connection with the first day, unless where it is recorded as a historical fact. On the other hand, I observed that Christ and his Apostles _were accustomed_ to enter into the synagogue on the seventh day, or Sabbath, for public worship. Luke 4:16; Acts 17:2, and elsewhere.