And He said to them, “You are those who justify yourselves before men, but God knows your hearts. For what is highly esteemed among men is an abomination in the sight of God. ~Luke 16:15 NKJV 

“On that day of judgment,” says the Lord,“I will punish the leaders and princes of Judah and all those following pagan customs. ~ Zephaniah 1:8

The words of Charles Haddon Spurgeon, delivered in a Lord’s Day sermon on December 24, 1871:

“We have no superstitious regard for times and seasons. Certainly we do not believe in the present ecclesiastical arrangement called Christmas: first,  because we do not believe in the mass at all, but abhor it, whether it be said or sung in Latin or in English; and secondly, because we find no Scriptural warrant whatever for observing any day as the birthday of the Saviour; and consequently, its observance is a superstition, because [it’s] not of divine authority. Superstition has fixed most positively the day of our Saviour’s birth, although there is no possibility of discovering when it occurred. …

“It was not till the middle of the third century that any part of the church celebrated the nativity of our Lord; and it was not till very long after the Western church had set the example, that the Eastern adopted it. Because the day is not known, therefore superstition has fixed it; … Where is the method in the madness of the superstitious? Probably  the fact is that the holy days were arranged to fit in with the heathen festivals. … We venture to assert that if there be any day in the year of which we may be pretty sure that it was not the day on which the Saviour was born, it is the twenty-fifth of December. … regarding not the day, let us, nevertheless, give God thanks for the gift of His dear Son.”