I was talking to a protestant woman who said she switched churches because the new pastor gives a good Bible lesson. Worship is not a lesson. The four purposes of worship are adoration, thanksgiving, atonement, and petition. Sadly, she cannot receive the Eucharist. She stopped going. Not surprising. What can one say?
https://catholicgentleman.com/2014/10/four-ends-mass/
Why do I go? I want to be at the cross and comfort Him.
Nicene Creed date: June 19, 325. It was an answer to heresy.