I infer, therefore, that "the day of the Sabbath," or "the Sabbath-day," is the proper name of the seventh day of the week, as much so as "the day of Saturn;" and that to attach this proper name _now_ to some other day of the week, and to affirm that God meant that other day, as much as he did the seventh, when he wrote the law on tables of stone, is as unreasonable as it is impious. If you say, that when God speaks of "the Sabbath-day," he means "one day in seven, but no day in particular," you are as far from the truth as if you said that, when he speaks of Moses, he does not mean any particular man, but "some one of the Israelites." Moses _was_ one of the Israelites, just as the Sabbath-day _is_ one day in seven. But when God says Moses, he means Moses the son of Amram; and when he says "the Sabbath-day," he means the seventh day of the week. You _may_ give different names to the same object, without interfering with its identity; but to apply the same name to two different objects, and then to affirm that these two objects are identically the same, so that what is predicated of the one must be true of the other, is as though a navigator should discover an island in the Southern Ocean, and call it "England," and then affirm that the late work of Mr. Macaulay, entitled "The History of England," is a veritable and authentic history of his newly-discovered empire. Which would you wonder at most, the stupidity or the effrontery of that navigator? I cannot close this chapter without reminding you that, in attempting to refute the above reasoning, the main thing you will have to show is, that "the Sabbath-day," or "the day of the Sabbath," is an indefinite or general expression, applicable alike to at least two different days of the week, and that it is used indefinitely in this commandment. If it has been proved, that "the day of the Sabbath" refers, and can refer, _only_ to the seventh day of the week, then it is true, and will remain forever true, that the original Sabbath law requires the sanctification of no other day. This is the truth which I undertook to exhibit in this chapter, and is my first reason for believing the proposition under consideration. CHAPTER II. _Second Reason._ My second reason for believing this proposition is, That Adam and all his posterity have solemnly covenanted to keep holy the seventh day. Genesis 2:15-17--"And the Lord God took the man, and put him into the Garden of Eden, to dress it, and to keep it. And the Lord God commanded the man, saying, Of every tree of the garden thou mayest freely eat; but of the tree of the knowledge of good and evil, thou shalt not eat of it; for in the day that thou eatest thereof thou shalt surely die."