What is the meaning of Mark 7:18?

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

“Are you still so dull?” He asked. “Do you not understand? Nothing that enters a man from the outside can defile him,

Berean Standard Bible (BSB)

He said to them, “Are you thus without understanding also? Don’t you perceive that whatever goes into the man from outside can’t defile him,

World English Bible (WEB)

And{G2532} he saith{G3004}{(G5719)} unto them{G846}, Are{G2075}{(G5748)} ye{G5210} so{G3779} without understanding{G801} also{G2532}? Do ye{G3539} not{G3756} perceive{G3539}{(G5719)}, that{G3754} whatsoever thing{G3956} from without{G1855} entereth{G1531}{(G5740)} into{G1519} the man{G444}, it cannot{G3756}{G1410}{(G5736)} defile{G2840}{(G5658)} him{G846};

Strong's King James

(18) He said to them, "Are you so senseless? Don't you understand that whatever goes into the man from outside cannot defile him,

The F.O.G*

[18] He responded with patient intensity: "Are you still struggling to understand? Can't you see that nothing entering a person's body from the outside can make them spiritually unclean?

The F.O.G Paraphrase

and he saith to them, ‘So also ye are without understanding! Do ye not perceive that nothing from without entering into the man is able to defile him?

Young's Literal Translation