There’s a Jesus quote about specifically this. Here’s the first search result.

“Do not think that I have come to abolish the Law or the Prophets; I have not come to abolish them but to fulfill them. For truly I tell you, until heaven and earth disappear, not the smallest letter, not the least stroke of a pen, will by any means disappear from the Law until everything is accomplished” (Matthew 5:17–18).

That’s the convenient quote that conservatives can point to when they still want to enforce old testament shit. For instance, claiming to follow Leviticus when they’re being homophobic, rather than going with their homeboy’s forgiveness and loving the sinner.