Questions about what to do if someone uses the Columbo tactic against you, why some Christians say that only some doctrines matter and should be defended, and whether the extent to which one spends time and resources looking for answers to apologetics questions can become wrong.

What should we do if someone uses the Columbo tactic against us?

I have a high respect for truth, but my Christian friends tell me that only some doctrines matter. Why not defend all that has been taught for the past 2,000 years?

Can the extent to which one spends time and resources looking for answers to apologetics questions become wrong if other parts of one’s spiritual life are beginning to suffer?