“As I urged you when I was going to Macedonia, remain at Ephesus so that you may charge certain persons not to teach any different doctrine, nor to devote themselves to myths and endless genealogies, which promote speculations rather than the stewardship from God that is by faith. The aim of our charge is love that issues from a pure heart and a good conscience and a sincere faith. Certain persons, by swerving from these, have wandered away into vain discussion, desiring to be teachers of the law, without understanding either what they are saying or the things about which they make confident assertions.” (1 Timothy 1:3-7)
What Paul characterizes here in the first chapter of the first letter to Timothy is something that goes on quite a bit in religious circles today. We may not speculate about “myths and endless genealogies” today, but we engage in similar discussions. I don’t think that myths and genealogies are so much the issue, as the time we spend locked into trying to prove and persuade others of particular points and principles that are peripheral and distract us from “the stewardship of God that is by faith”.
When Paul talks about certain persons teaching a “different doctrine”, I don’t think he is speaking about doctrine in the way we might view the word today. In Paul’s time, there were no systematic theologies. Doctrinal issues focused on the fundamentals – who is Jesus? Did he rise from the dead in bodily form? Must believers be circumcised?
Today, there is no end to the theologies and doctrinal points of view that get so finely debated as to focus on such things as how many angles can dance on the head of a pin without jostling each other. I jest of course; but that is the point. We get into the weeds on issues that may be interesting, but they aren’t central or necessary to the Gospel.