So the NT does not teach us holy living as Jesus lived in completion? Is this not the age of the Holy Spirit in every Christian? I can eat meat sacrificed to idols (as long as it isn’t human) and others shouldn’t. Is that the basis of the sanctification discussion?
Sanctification is not only behavior but knowing God as well as we can - the goal of every Christian should be to know God as intimately as possible. The only things we can know about God is what he chooses to reveal. He reveals himself through his revelation. There is general revelation, what he reveals of himself through his creation and special revelation, what is revealed in scripture. I choose to read all of his revelation to know him as best I can. The bible is one complete work. You wouldn’t read half of any other book and claim to understand what the author was saying completely, why would anyone do any less with the bible? Come on, this is theology proper 101.