What you want to know seems like an "either-or" question: a security I imagine I have versus a mind and heart already at peace — with and in themselves as well as with the world in which they interact.

The purpose of truthful teachings, such as Christ disseminated into our world, is to bring the willing soul into an accord with a new kind of Wisdom, a new order of Love (if you will) that understands — without having to "think" about it — the true nature of real security; this level of security is not something that "man" makes, anymore than we are the creators of Love, Sacrifice, or Peace.

We are created to be the conscious instruments of these celestial characters, and as the instrument of such Light, to "shine" — as does our Father in heaven - upon "good and evil" alike.

This level of Peace, and its innate security is not a construct of the human mind, and cannot be imagined by it either... save as an opposite to whatever is feared by that same level of mind.

What this means is that the question you've asked can only be answered by your awakening to another level of Being... where the concern is not how do I reconcile the world around me with how I want, or hope it to be... that I might know a greater peace? but rather how can I awaken in myself the Light of the true Christ, a level of Self that is, itself, the reconciliation and ultimate atonement that you seek.

All this is not to say, as stated in Eastern scripture, that we don't "tie up our camel, even though we hold faith in the goodness of God."