"Ash Wednesday comes from the ancient Jewish tradition of penance and fasting"
https://www.catholic.org/lent/ashwed.php
"Stop bringing me your meaningless gifts; the incense of your offerings disgusts me! As for your celebrations of the new moon and the Sabbath and your special days for fasting— they are all sinful and false. I want no more of your pious meetings."
https://www.biblehub.com/isaiah/1-13.htm
“I hate all your show and pretense— the hypocrisy of your religious festivals and solemn assemblies."
https://biblehub.com/amos/5-21.htm
"It's not what goes into the mouth that defiles a person, but what comes out of the mouth–this defiles a person."
https://biblehub.com/matthew/15-11.htm