What is the meaning of John 8:28?

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

So Jesus said, “When you have lifted up the Son of Man, then you will know that I am He, and that I do nothing on My own, but speak exactly what the Father has taught Me.

Berean Standard Bible (BSB)

Jesus therefore said to them, “When you have lifted up the Son of Man, then you will know that I am he, and I do nothing of myself, but as my Father taught me, I say these things.

World English Bible (WEB)

Then{G5119} said{G2036}{(G5627)} Jesus{G2424} unto them{G846}, When{G3752} ye have lifted up{G5312}{(G5661)} the Son{G5207} of man{G444}, then{G3767} shall ye know{G1097}{(G5695)} that{G3754} I{G1473} am{G1510}{(G5748)} he, and{G2532} that I do{G4160}{(G5719)} nothing{G3762} of{G575} myself{G1683}; but{G235} as{G2531} my{G3450} Father{G3962} hath taught{G1321}{(G5656)} me{G3165}, I speak{G2980}{(G5719)} these things{G5023}.

Strong's King James

(28) Therefore, Yeshua said, "When you lift up the Son of Humanity, then you will know that I AM! I do nothing of Myself, rather I speak this like The Abba taught Me."

The F.O.G*

[28] So Jesus said, "When you have lifted up the Son of Man on the cross, then you will know that I Am who I claim to be and that I do nothing on My own but speak just what the Father has taught Me.

The F.O.G Paraphrase

Jesus, therefore, said to them, ‘When ye may lift up the Son of Man then ye will know that I am he; and of myself I do nothing, but according as my Father did teach me, these things I speak;

Young's Literal Translation