Fair enough. I agree they were less relevant now certainly. I would not go over the verses quoted in detail, but surely the message from these are still relevant though today. Yes, we do not have any slavery, but those days slavery was a system quite close to a contract and an employer/employee relationship. A good slave obeyed his master and his master should be fair to him. In fact the master could even treat him like a relative, a part of the household (ref. letter to Philemon). Of course this is all from Christian’s perspective.
About prohibiting women to teach is probably more controversial and I will not touch on that. A thing to note though, very this verse is being used against Catholicism.
What I want to say is the Bible is to be looked at for the message it brings. You are right in that people’s activities then may be different than now but the message, the value, are not. What amazed me all the time, the ancient wisdom in the Bible is still very much applied today and how people behaved then still very much what people behave today though in a different practical situation.
God bless.