, p. 133):
The observance of the uncommanded holy-days is ever found to interfere with the due sanctification of the Lord’s-day. Adding to the appointments of God is superstition; and superstition has ever been found unfriendly to genuine obedience. Its [adherents], like the Jews of old, have ever been found more tenacious of their own inventions, of traditionary dreams, than of God’s revealed code of duty. Accordingly, there is perhaps no fact more universal and unquestionable, than that the zealous observers of stated fasts and festivals are characteristically lax in the observance of that one day which God has eminently set apart for himself, and on the sanctification of which all the vital interests of practical religion are suspended.
, pp. 274-275):
Idolaters are proud men, and idolatry is a proud sin . . . . [Idolaters] honour what is a man’s own because it is his own, rather than what is God’s. Do not you see it plainly in all superstitious, idolatrous people? As in that one thing of days? God has set one day apart for the honouring of himself, and for the celebration of the birth, death, resurrection, and ascension of Jesus Christ, and of the whole work of redemption: how is that day slighted and neglected! But what a horrible wickedness is it accounted not to keep that which man sets apart by himself, that day which is of man’s appointment!
Men will set apart a day for the honour of Christ and insist that Christ is quite forgotten if that day be forgotten, and Christ is much dishonoured if that day be not regarded. I appeal to you, who sets it apart? whose is it? Is it God’s, or is it yours? God’s? Certainly, if such a thing were so acceptable to God as men conceive it to be, we should have some little hint, somewhat in the book of God regarding it. We have the story of all the acts of the apostles, what they did in several places, and there is not the least mention of of any such thing of their honouring Christ, by setting a day apart for the celebration of his nativity: we have the epistles to several churches upon several occasions, and we find no notice taken of any such thing in any church they established. Surely therefore it is men’s own, there is nothing in God’s word for it, how highly soever it is honoured.
But we have enough in Scripture for God’s own day, the Lord’s day; it is appointed by God himself to be a day of thanksgiving for the birth, resurrection and ascension of Christ, and for the whole work of our redemption: but man, out of his pride, will have another day, and so set his post by God’s post; he thinks it is not honour enough to Christ to put the celebration of his birth, death, resurrection, ascension, all together in one day; no, he thinks it conduces more to the honour of Christ to have several days, one for his birth, another for his resurrection, and another for his ascension; whereas God hath put all into one, and would have his Son honoured by the observation of that one day.
, pp. 152-153):