Here’s a nice statement on biblical hermeneutics.
“This narrative’s [John 5.1-18] point of view is that, because of who he is, Jesus is not subject to the law but instead fulfills all that the law previously stood for. The law, then, is to be judged in the light of Jesus and his mission and not the other way round” (A. T. Lincoln, Truth on Trial [Peabody: Hendrickson Publishers, 2000], 235).
Note the italics, which I’ve added. This is one of those great hermeneutical “rules:” the OT is to be read through the lens of the NT. In the quote above, Lincoln applies this “rule” to a specific situation, namely Jesus and the law in John’s gospel. This opens up a lot of texts in John!