What is “truth”? In what way was Jesus “full of truth”? Jesus spoke and lived the truth, the whole truth and nothing but the truth – about human beings and the holiness and justice of the eternal Almighty.
John witnesses concerning him and cried out, stating, “This was the one on behalf of whom I said, ‘The one coming after me came into being before me', in that he was first before me."
The “John” in this sentence is not the writer of this biography but John the Baptist – the first-century prophet in Israel. He was unequivocal in witness.
That out of his fullness we ourselves all received, and grace against grace.
John (the writer) continues his explanation of how he and others became “children of God”. When Jesus came, that “glory” of his, that “glory full of grace and truth” was imparted to them. They “all received” some of that “fulness”. They “received” stuff from him which changed them deep inside.
“Grace against grace”? What on earth? The word for “against” is anti in the original Greek. This seems strange. How can grace be anti-grace - oppose grace? It seems to me that John is faithfully and correctly recording that the grace they “all received” within themselves - the unmerited, undeserved steadfast love they were given by Jesus by “the Word made flesh” - became the source of the "grace" they showed to all others.
That the law was given through Moses; the grace and the truth came to be through Jesus Christ.
Moses “was given” the Ten Commandments around 1350 BC – along with what is known as the Mosaic Law which was to guide God’s people.
That was well and good. The Ten Commandments became global as the basis of law in most people groupings. But what is "law" compared with “the grace” and “the truth” which Jesus brought down to earth from above?