Passage
And of his fulnesse haue all we receiued, and grace for grace.
And of his fulnesse haue all we receiued, and grace for grace.
John 1:14 And that Word was made flesh, and dwelt among vs, (and we sawe the glorie thereof, as the glorie of the onely begotten Sonne of the Father) full of grace and trueth.
John 1:15 Iohn bare witnesse of him, and cryed, saying, This was he of whom I said, He that commeth after me, was before me: for he was better then I.
John 1:16 And of his fulnesse haue all we receiued, and grace for grace.
John 1:17 For the Lawe was giuen by Moses, but grace, and trueth came by Iesus Christ.
John 1:18 No man hath seene God at any time: that onely begotten Sonne, which is in the bosome of the Father, he hath declared him.
The verse centers on "grace", "fulnesse", "haue", and "receiued". It is saying that the verse draws attention to "grace" and "fulnesse", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 15's "Iohn bare witnesse of him and cryed..." into verse 17's "For the Lawe was giuen by Moses...", so "grace" and "fulnesse" belong inside that flow. In John context, the local focus is the identity of Jesus, new birth, eternal life, and belief and unbelief.
A plain takeaway is to answer the verse's own emphasis on "grace" and "fulnesse" with trust shaped by these words, not by a vague optimism outside the passage.