Your mistake was actually reading the bible.

You're not supposed to read it, you're supposed to let other people cherry-pick passages for you, which you can then selectively observe while conveniently ignoring all the incongruent parts.

Ya silly.

According to what churchgoers are told, at least.

"And Jesus answering said unto them, Render to Caesar the things that are Caesar's, and to God the things that are God's." ~ Jesus, Mark 12:17

The Bible says that the ruling class is ruling because God wills it, every ruler has been carefully selected by God. It says so repeatedly throughout the Old and New Testament.

"Obey them that have the rule over you, and submit yourselves: for they watch for your souls, as they that must give account, that they may do it with joy, and not with grief: for that is unprofitable for you." ~Hebrews 13:17

The Bible is pro oppression, and has been quoted to defend the ruling class for seventeen centuries or so. God says that only He can judge them, but not you.

That's where the "According to what churchgoers are told, at least." part comes in. They don't care, which is why Christians ignore that one despite it being right there in the Bible. Historically, it was probably because shellfish didn't store well in the desert and was likely to make you sick.