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.

– Samuel Miller, “Presbyterianism the Truly Primitive and Apostolic Constitution of the Church of Christ”…/485355…

“The Lord will punish the Reformed on account of the days of Baal (Hosea 2:12-13), and he also observes what the children do on the occasion of such idolatry (Jer. 17:18). Therefore, do not let your children receive presents on Santa Claus day, nor let them draw tickets in a raffle and such things. Pick other days on which to give them the things that amuse them, and because the days of Christmas, Easter, and Pentecost have the same character, Reformed people must keep their children away from these so-called holy days and feast days.”

–Jacobus Koelman (1632-1695), “De Pligten der Ouderen om Kinderen voor God op te Voeden,” p. 73

Appendix to the Westminster Directory for the Public Worship of God, Touching Days and Places for Public Worship:

There is no day commanded in scripture to be kept holy under the gospel but the Lord’s day, which is the Christian Sabbath.

Festival days, vulgarly [commonly] called Holy-days, having no warrant in the word of God, are not to be continued.

Nevertheless, it is lawful and necessary, upon special emergent occasions, to separate a day or days for publick fasting or thanksgiving, as the several eminent and extraordinary dispensations of God’s providence shall administer cause and opportunity to his people.

As no place is capable of any holiness, under pretence of whatsoever dedication or consecration; so neither is it subject to such pollution by any superstition formerly used, and now laid aside, as may render it unlawful or inconvenient for Christians to meet together therein for the publick worship of God. And therefore we hold it requisite, that the places of publick assembly for worship among us should be continued and employed to that use.…/what-did-westminster…/