'Observances' in the Bible

Remember me, O my God, concerning this, and wipe not out my good deeds that I have done for the house of my God, and for the observances thereof.

The command of Esther established these customs for Purim, and it was written in the book [of the royal archives].

“How can you say, ‘We are wise,And the law of the Lord is with us [and we are learned in its language and teachings]’?Behold, [the truth is that] the lying pen of the scribesHas made the law into a lie [a mere code of ceremonial observances].

All who desire to display their zeal for external observances try to compel you to receive circumcision, but their real object is simply to escape being persecuted for the Cross of Christ.

how much more will the blood of Christ, who through the eternal [Holy] Spirit willingly offered Himself unblemished [that is, without moral or spiritual imperfection as a sacrifice] to God, cleanse your conscience from dead works and lifeless observances to serve the ever living God?