Now then for the ground of the question.
First, we read not that God gave it to any but to the seed of
Jacob. Hence it is said to Israel, and to Israel only, 'The Lord
hath given YOU the sabbath' (Exo 16:29). And again, 'also I gave
THEM my sabbath' (Eze 20:5,12).
Now, if the gift of the seventh day sabbath was only to Israel, as these texts do more than seem to say; then to the Gentiles, as such, it was not given. Unless any shall conclude, that God by thus doing preferred the Jew to a state of gentileism; or that he bestowed on them, by thus doing, some high Gentile privilege. But this would be very fictious. For, to lay aside reason, the text always, as to preference, did set the Jew in the first of places (Rom 2:10). Nor was his giving the seventh day sabbath to them but a sign and token thereof.
But the great objection is, because the seventh day sabbath is found amongst the rest of those precepts which is so commonly called the moral law; for thence it is concluded to be of a perpetual duration.
But I answer: That neither that as given on Sinai is moral; I mean, as to the manner and ends of its ministration, of which, God permitting, we shall say more in our answer to the fourth question, whither I direct you for satisfaction. But,
Second, The Gentiles could not be concerned, as such, with God's giving of a seventh day sabbath to Israel, because, as I have shewed before, it was given to Israel, considered as a church of God (Acts 7:32). Nor was it given to them, as such, but with rites and ceremonies thereto belonging, so Leviticus 24:5-9; Numbers 28:9, 10; Nehemiah 13:22; Ezekiel 46:4.
Now, I say, if this sabbath hath ceremonies thereto belonging, and if these ceremonies were essential to the right keeping of the sabbath: and again, if these ceremonies were given to Israel only, excluding all but such as were their proselytes, then this sabbath was given to them as excluding the Gentiles as such. But if it had been moral, the Gentiles could as soon have been deprived of their nature as of a seventh day sabbath, though the Jews should have appropriated it unto themselves only.
Again, to say that God gave this seventh day sabbath to the Gentiles, as such, (and yet so he must, if it be of the moral law) is as much as to say, that God hath ordained that that sabbath should be kept by the Gentiles without; but by the Jews, not without her ceremonies. And what conclusion will follow from hence, but that God did at one and the same time set up two sorts of acceptable worships in the world: one among the Jews, another among the Gentiles! But how ridiculous such a thought would be, and how repugnant to the wisdom of God, you may easily perceive.
Yea, what a diminution would this be to God's church that then was, for one to say, the Gentiles were to serve God with more liberty than the Jew! For the law was a yoke, and yet the Gentile is called the dog, and said to be without God in the world (Deut 7:7; Psa 147:19,20; Matt 15:26; Eph 2:11,12).
Third, When the Gentiles, at the Jews' return from Babylon, came and offered their wares to sell to the children of Israel at Jerusalem on this sabbath; yea, and sold them to them too: yet not they, but the Jews were rebuked as the only breakers of that sabbath. Nay, there dwelt then at Jerusalem men of Tyre, that on this sabbath sold their commodities to the Jews, and men of Judah: yet not they, but the men of Judah, were contended with, as the breakers of this sabbath.