I don't think anyone has touched the essential expressed by Josef Goldbrunner, many years ago, and one that guided much of our (seminary years) understanding about real holiness. Simply stated, Holiness is Wholeness. (The title of his book).
For believers who believe in God/Yahweh/Allah the Creator, what is so in tune with that creation.
For believers who believe in the Salvation of Jesus, what is more true of him than that message.
For those who believe in Buddhism, enough said.
I agree. I was probably nibbling around the corners of that with my post.