What is the meaning of 2 Corinthians 13:2?

* The two F.O.G. Bibles & Commentary below are currently a work in progress.

I already warned you the second time I was with you. So now in my absence I warn those who sinned earlier and everyone else: If I return, I will not spare anyone,

Berean Standard Bible (BSB)

I have said beforehand, and I do say beforehand, as when I was present the second time, so now, being absent, I write to those who have sinned before now, and to all the rest, that, if I come again, I will not spare;

World English Bible (WEB)

I told you before{G4280}{(G5758)}, and{G2532} foretell you{G4302}{(G5719)}, as if{G5613} I were present{G3918}{(G5752)}, the second{G1208} time; and{G2532} being absent{G548}{(G5752)} now{G3568} I write{G1125}{(G5719)} to them which heretofore have sinned{G4258}{(G5761)}, and{G2532} to all{G3956} other{G3062}, that{G3754}, if{G1437} I come{G2064}{(G5632)} again{G1519}{G3825}, I will{G5339} not{G3756} spare{G5339}{(G5695)}:

Strong's King James

(2) I said beforehand when present the second time and though now absent I say in advance to those deviating beforehand and to all the rest, that if I come to you again I won't spare anyone.

The F.O.G*

[2] I warned you before when I was with you on my second visit, and I warn you again now while absent: When I return, I won't spare those who continued in sin or any others who persist in wrongdoing. The time for gentle correction is past.

The F.O.G Paraphrase

I have said before, and I say it before, as being present, the second time, and being absent, now, do I write to those having sinned before, and to all the rest, that if I come again, I will not spare,

Young's Literal Translation