Because their were Judiaziers (ravenous wolves) following him around telling the new Christians they had to follow the OT law. He warns about them several places in the NT. Boy, kinda like the point some are trying to impose on this thread. Why would he say these things were just a "shadow of the things to come" but that the substance "belongs to Christ" if he was defending them? That makes no sense and would completely contradict Romans 14.
Do you want to find that word, "Judaizer" for me in scripture? I think you're really confusing that with the circumcision parties that were sent from James....and the Jerusalem Church [Galatians 2:12][Titus 1:10][Galatians 5:12][Acts 15:1].
Nothing was ever said against observing the Feasts, Sabbaths and Dietary regulations in scripture. If you think it was....I challenge you to show me.
You're interpretation of [Colossians 2:16] is exactly backwards from what Paul was explaining to these folks. Let's look at that passage without the added words the translators included.....to make it more clear for their heresy:
[Colossians 2:16-17] 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": 17Which are a shadow of things to come; but the body "is" of Christ.
The highlighted words are not inspired. They were added by human translators.
Here is the Greek: ¶ Μὴ not οὖν therefore/then τις some/any (nom) ὑμᾶς you(pl) (acc) κρινέτω let-him/her/it-be-JUDGE-ing! ἐν in/among/by (+dat) βρώσει eating (dat) { ἢ or ἐν in/among/by (+dat) πόσει drinking (dat) ♦ καὶ and/also ἐν in/among/by (+dat) πόσει drinking (dat) } , ἢ or ἐν in/among/by (+dat) μέρει parts of the country (dat) ἑορτῆς festival (gen) ἢ or { νουμηνίας new moon (gen), new moons (acc) ♦ νεομηνίας new moon (gen), new moons (acc) } ἢ or σαββάτων sabbaths (gen) ·
ἅ who/whom/which (nom|acc) ἐστιν he/she/it-is σκιὰ umbra (nom|voc) τῶν the (gen) μελλόντων let-them-be-ABOUT-ing! (classical), while ABOUT-ing (gen) , τὸ the (nom|acc) δὲ But also σῶμα body (nom|acc|voc) { χριστοῦ Messiah (gen) ♦ τοῦ the (gen) χριστοῦ Messiah (gen) }
Do you know what the "Body of Christ (Messiah)" is? It's commonly referred to as the Church....believers.
Now....read the passage without the added words placed there by biased translators, attempting to put a "spin" on Holy Scripture. Here it is for your edification:
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 sabbaths which are a shadow of things to come..... but the body of Christ.
In other words the inspired Greek tells these previously pagan Colossians to not pay any attention to criticism they were receiving for their new found observances of the Feasts, Sabbaths, New Moons and Dietary regulations. That is.....except, of course...... from members of the Body of Christ...the Church.
See how clear the word of Yahweh is when you brush away the scales from your Catholic/Protestant eyes?
Now......what exactly contradicts Romans 14?
Still awaiting your explanation here......of what the contradiction is. I'm very curious to know what it is that is conflicting to you.