What is the meaning of Mark 9:42?

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

But if anyone causes one of these little ones who believe in Me to stumble, it would be better for him to have a large millstone hung around his neck and to be thrown into the sea.

Berean Standard Bible (BSB)

Whoever will cause one of these little ones who believe in me to stumble, it would be better for him if he were thrown into the sea with a millstone hung around his neck.

World English Bible (WEB)

And{G2532} whosoever{G3739}{G302} shall offend{G4624}{(G5661)} one{G1520} of these little ones{G3398} that believe{G4100}{(G5723)} in{G1519} me{G1691}, it is{G2076}{(G5748)} better{G2570}{G3123} for him{G846} that{G1487} a millstone{G3037}{G3457} were hanged{G4029}{(G5736)} about{G4012} his{G846} neck{G5137}, and{G2532} he were cast{G906}{(G5769)} into{G1519} the sea{G2281}.

Strong's King James

(42) Also whoever causes to stumble (sin), one of these humbles who believe in Me, it's better for him if a millstone turned by a donkey is hung about his neck and he be thrown into the sea.

The F.O.G*

[42] But if anyone causes one of these little ones who believe in Me to stumble in their faith, it would be better for them to be thrown into the sea with a massive millstone around their neck.

The F.O.G Paraphrase

and whoever may cause to stumble one of the little ones believing in me, better is it for him if a millstone is hanged about his neck, and he hath been cast into the sea.

Young's Literal Translation