What is the meaning of John 7:28?

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

Then Jesus, still teaching in the temple courts, cried out, “You know Me, and you know where I am from. I have not come of My own accord, but He who sent Me is true. You do not know Him,

Berean Standard Bible (BSB)

Jesus therefore cried out in the temple, teaching and saying, “You both know me, and know where I am from. I have not come of myself, but he who sent me is true, whom you don’t know.

World English Bible (WEB)

Then{G3767} cried{G2896}{(G5656)} Jesus{G2424} in{G1722} the temple{G2411} as he taught{G1321}{(G5723)},{G2532} saying{G3004}{(G5723)}, Ye both{G2504} know me{G1492}{(G5758)}, and{G2532} ye know{G1492}{(G5758)} whence{G4159} I am{G1510}{(G5748)}: and{G2532} I am{G2064} not{G3756} come{G2064}{(G5754)} of{G575} myself{G1683}, but{G235} he that sent{G3992}{(G5660)} me{G3165} is{G2076}{(G5748)} true{G228}, whom{G3739} ye{G5210} know{G1492}{(G5758)} not{G3756}.

Strong's King James

(28) Therefore Yeshua cried out in the Palatial-Temple, teaching and saying, "You both know Me and where I'm from and I don't come of Myself but the One who sent Me is true, whom you don't know."

The F.O.G*

[28] Jesus, still teaching in the Temple courts, called out with passionate clarity: "Yes, you know Me and where I'm from humanly speaking. But I'm not here on My own authority. The One who sent Me is true, and you don't know Him.

The F.O.G Paraphrase

Jesus cried, therefore, in the temple, teaching and saying, ‘Ye have both known me, and ye have known whence I am; and I have not come of myself, but He who sent me is true, whom ye have not known;

Young's Literal Translation