study to shew yourself approved...
Paul letters to .timothy were really good cos Timothy was quite young but a new leader pastoring a flock and Paul was encouraging him to study even though he knew from a child the holy scriptures. he knew how important to teach sound doctine and also, in his daily walk to be an example to others..like he had to have his own house in order before he could even think of ordering the household of God. Also he admonishes those wanting to be bishops and deacons to have just one wife, and not be double tongued and drink too much, or be after money.
Jude also warned about false teachers infiltrating the church. It was one of the last letters though in the bible you think they be in date order apparently they are in order of length..many people forget the warnings in the letter of Jude.
Or even Philemon where he treats the former slave like a brother not a slave anymore. Ive heard in churches that we have to be slaves to God, which is nowhere in my bible it says servants not slaves. big difference.
so I think also what Bible version you read can also be important cos there some fake Bibles out there, dont be deceived. If Satan can twist Gods word by putting out fake bibles, he will do it.