Galatians 4:11

“You are observing special days and months and seasons and years!”

Contextual link to the observance of religious practices.

“One person considers one day more sacred than another; another considers every day alike. Each of them should be fully convinced in their own mind. Whoever regards one day special does so to the Lord.”

Parallel concern about judging others based on observance of special days.

“Therefore do not let anyone judge you by what you eat or drink, or with regard to a religious festival, a New Moon celebration or a Sabbath day.”

Similar warning against being judged based on observance of religious practices.

“Mark my words! I, Paul, tell you that if you let yourselves be circumcised, Christ will be of no value to you at all.”

Links to the broader theme of the futility of relying on religious practices for salvation.

“To the Jews I became like a Jew, to win the Jews. To those under the law I became like one under the law (though I myself am not under the law), so as to win those under the law.”

Highlights the contrast between Paul's strategic accommodation and the Galatians' reversion to legalism.