There is no "deeper holiness" here, in my estimation, simply the reality of what Jesus did.
I've died but I'm still alive! But it's not me, it's actually Jesus living in me! And the life I now think of as me is actually faith from God in me, bringing His life into me.
Isn't this plainly stated? Don't we just need to accept the reality of the words we can readily read?
You are not called to "accept the reality of the words"....that is what religious indoctrination does. You are to go through the experience of it and actually KNOW the power of His resurrection. I call it the deeper things because that's what it is. NOT a superficial nodding in agreement to a text. THAT is superficial.
The first step is to receive forgiveness.....the second step is to suffer with Christ the separation of ourselves from this world.