Colossians is an excellent example of Paul bringing Christians back from the destractions of various human philosophies to Christ Himself as all they need.
Not only from philosophy does Paul call the saints from.
But he also seeks to rescue them from religion, even the religion based on the law of Moses.
For example:
"Let no one therefore judge you in eating and in drinking or in respect of a feast or of a new moon or of the Sabbath,
Which are a shadow of the things to come, but the body is of Christ." (Col. 2:16,17)
Eating, holy diet, feast days, new moons, Sabbaths ... these were all legitimate elements of the Old Testament Judaism.
Now Paul says that these were not the solid substance but shadow of the things to come. Mainly to come was God incarnate in Jesus Christ.
He is the feast.
He is the holy diet.
He is the new moon - the new beginning.
He is the REST (the Sabbath) , the satisfaction and rest in God.
This is coming from under the law of Moses into the grace of Christ.