The following quotes from The Gospel According to John will help
bring enlightenment to this question:
"The true light that enlightens every man was coming into the world.... And the Word became flesh and dwelt among us, full of grace and truth" (John 1:9, 14).
"And from his fulness have we all received, grace upon grace. For the law was given through Moses; grace and truth came through Jesus Christ" (John 1:16-17).
The consciousness that Jesus demonstrated in The Gospel According to John is called grace consciousness because it exemplifies a mind and heart fully awakened and expressing from the nature of being, which is the nature of love. This is the "fulness" that is spoken of in the Scripture.
"The law was given through Moses." The law referred to here is understood as "an eye for an eye and a tooth for a tooth" (Matt. 5:38). This is known as even exchange. In Unity, we refer to this law as the law of mind action: Thoughts held in mind, produce after their kind; like begetting like, like attracting like. What you sow in consciousness, you reap in manifestation. This law, Jesus tells us, will not be mocked.
When Jesus came to earth, however, He brought a greater understanding of this one great law. He brought the understanding of its fulfillment. He said, "Think not that I have come to abolish the law and the prophets; I have come not to abolish them but to fulfill them" (Matt. 5:17). How does He fulfill the law? By expressing, on every level of being, pure, unconditional love to all humankind. "Love does no wrong to a neighbor; therefore love is the fulfilling of the law" (Rom. 13:10). We can always interchange the word grace for love, and it is for this reason that we make the statement: "Grace is the fulfillment of the law!"
As a human race, we are now awakening to the fullness of grace consciousness, and the book of John reveals this awakening as a progressive process beginning with the baptism of John the Baptist and ending with the Resurrection and Ascension of Jesus Christ. It is our story, so let us begin!