And in Col. 2:16, after spending several verses explaining God had "destroyed" the "certificate of debts expressed in decrees," metaphorical for the old Law, he exhorts the readers not to tolerate anyone presuming to sit in judgment over them in regard to the old festivals and holy days, explicitly including "Sabbaths."
Col. 2 is a warning about religious men.
Col. 2:8 Beware lest any man spoil you (make you rotten) through philosophy and vain deceit, after the tradition of men, after the rudiments of the world, and not after Christ.
Again, to believe modern religious doctrines, I would have to believe that the Christ is a liar. That the Sabbath of the Lord, are really not His, but "vain deceit", Traditions of men", rudiments of the World".
That when Jesus said the Sabbath was made for man, that this is a "Vain Deceit", and that I shouldn't listen to Him, as a man, or as the Creator of the Sabbath created for man. They are simply "Rudiments of the World".
What they willfully ignore here is that there were religious men, Pharisees, which were teaching for doctrines the Commandments and traditions of men. Men who had polluted and despised the Christ's Sabbaths, who killed innocent men according to their Law. A religion whose Laws said you couldn't take a walk on the Sabbath and eat an apple off a tree you walked by. A religion in whose Law made it a sin to eat an apple without first washing their hands a certain way.
A religion whose Laws condemned men depending on the DNA they were born with. A religion who, by their own law and ordinances, condemned the only perfect man to ever live on the earth, to death for breaking their Laws.
They had their High Days, They had their "images of God in the likeness of man". They had their own Laws they taught were God's Laws, but were not. This Priesthood, who had polluted God's Sabbath, had been around deceiving folks for centuries, is the Priesthood Jesus took over. it was their Laws that were against the Jew and Gentile. They were the ones Jesus "made a show of openly, and Triumphed over", not God as your teaching implies.
Paul is talking to those who "obeyed from the heart" that doctrine that was presented to them.
"Beware of men who would spoil you though philosophy". Don't let them judge you in your "Walking even as Jesus walked". These are of the Christ, not religious man.
16 Let no man therefore judge you in meat, or in drink, or in respect of an holyday, or of the new moon, or of the sabbath days:
17 Which are a shadow of things to come
; but the body is of Christ.
Religious men's "vain deceit" or "Traditions of men" or "Rudiments of the world", are shadows of nothing. They make you vain.
But the influence of the religions of the land is relentless, like the serpent, they are cleaver, and subtle and they never stop. This is why Paul warns to "Beware of them".
God's Grace allowed these believers to escape the bondage of the man made religions around them, just as those converted in Gal. 4. But the pull and power of religious tradition is strong and Paul has to stay on them.
20 Wherefore if ye be dead with Christ from the rudiments of the world
, why, as though living in the world, are ye subject to ordinances,
21 (Touch not; taste not; handle not;
22 Which all are to perish with the using;) after the commandments and doctrines of men? (NOT GOD as "many" who come in His Name, falsely preach)
It is a huge mistake and dis-service to God to equate HIS Sabbaths, Passover, Pentecost, to pagan high days, ceremonies, and observances. Sadly, many consider the "works" God foreordained that we should walk in them, just that "Beggarly Elements". But it is a deception, and one that were are warned about.