What is the meaning of 1 John 2:8?

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

Berean Standard Bible (BSB)

Then again, I am also writing to you a new commandment, which is true in Him and also in you. For the darkness is fading and the true light is already shining.

World English Bible (WEB)

Again, I write a new commandment to you, which is true in him and in you; because the darkness is passing away, and the true light already shines.

Strong's King James

Again{G3825}, a new{G2537} commandment{G1785} I write{G1125}{(G5719)} unto you{G5213}, which thing{G3739} is{G2076}{(G5748)} true{G227} in{G1722} him{G846} and{G2532} in{G1722} you{G5213}: because{G3754} the darkness{G4653} is past{G3855}{(G5731)}, and{G2532} the true{G228} light{G5457} now{G2235} shineth{G5316}{(G5719)}.

The F.O.G *

Yet again, I am writing a new commandment to you, which is true in Him and in you, because the darkness is passing and the true light is already shining.

The F.O.G Message *

[8] Yet in another sense, I am writing you a new command, because its truth is being demonstrated afresh in the Messiah and in you. The world's spiritual darkness is fading away while the true light of God's love is already shining brightly!But because of its importance, I am writing it to you as a new commandment, which is true in Him and in you. For the darkness is passing away and the true light is already shining.

Young's Literal Translation

again, a new command I write to you, which thing is true in him and in you, because the darkness doth pass away, and the true light doth now shine;