What is the meaning of 2 Peter 2:21?

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

It would have been better for them not to have known the way of righteousness than to have known it and then to turn away from the holy commandment passed on to them.

Berean Standard Bible (BSB)

For it would be better for them not to have known the way of righteousness, than, after knowing it, to turn back from the holy commandment delivered to them.

World English Bible (WEB)

For{G1063} it had been{G2258}{(G5713)} better{G2909} for them{G846} not{G3361} to have known{G1921}{(G5760)} the way{G3598} of righteousness{G1343}, than{G2228}, after they have known{G1921}{(G5631)} it, to turn{G1994}{(G5658)} from{G1537} the holy{G40} commandment{G1785} delivered{G3860}{(G5685)} unto them{G846}.

Strong's King James

(21) Because it would've been better for them to never have known the way of righteousness than having known it and turn back from the set apart holy commandment handed to them.

The F.O.G*

[21] It would have been better for them never to have known the way of righteousness than to have known it and then turn their backs on the sacred command that was passed on to them.

The F.O.G Paraphrase

for it were better to them not to have acknowledged the way of the righteousness, than having acknowledged it, to turn back from the holy command delivered to them,

Young's Literal Translation