Exodus 19: 9. And the Lord said unto Moses, Lo, I come unto thee in a thick cloud, that the people may hear when I speak with thee, and believe thee for ever. And Moses told the words of the people unto the Lord. 10. And the Lord said unto Moses, Go unto the people, and sanctify them to day and to morrow, and let them wash their clothes, 14. And Moses went down from the mount unto the people, and sanctified the people; and they washed their clothes.
What clothes did they wash? Were they their "Sunday best"? Clothes purchased for the sole purpose of going to church? No, I believe they were just their everyday clothes. Where did we get the belief that we have to have "Sunday best" clothes for church?
I remember watching "The Waltons" in my youth. On an episode, one of the kids wore their church shoes on a day other than Sunday and got them dirty. Olivia got her apron all up in a bind over it and was going off. This series portrayed the Waltons as poor people that could barely afford the bill at Godsey's store but they went out and spent money on shoes to wear one day a week? How on earth could we come up with "doctrine", to spend money we do not have, on something as frivolous as fashion? Were they really dressing for God, or just trying to look good so they were not judged by the congregation? "Putting on airs"
My problem is, and the meme nailed it, is when we have nice clothing that we are willing to wear for worldly occasions but then get the attitude, "the Bible doesn't have a dress code, I can wear what I want!" And then go to church looking like you are going to a picnic or bar. What does this say about our heart? Rebellious?
It might not be rebellion against God. Maybe just rebellion against a religious practice that was beat into our heads as if it were doctrine.