What a great Word! All summed up in your last phrases — “only to express WHO we contain. Jesus is our rest and righteousness” …. He is the key that unlocks all the doors ….
It is a great Truth that He is our Peace within us, peace which passes understanding. Passing understanding surely means, at least in one sense, that it is a peace that originates from beyond our thinking and beyond our emotions, from beyond ourselves, how we feel and what we think, and has nothing to do with outer circumstances — they are neither the author of peace nor of discord — all originates within us, because that is where the Father is, within us, yet beyond us, and Christ Jesus is the door, by whom we go in & out — in, to learn of the Father, and out, to be Him in the world ….
How are we Christ in the world??? By being what He was, the Express Image of the Father, in earthen vessel (human) form, and so we are, as He, fully human, fully alive in this world, as the Salt of the earth, as the Light of the world.
This is the Spirit in which He walked, and it is the same Spirit in which we now walk:
“Come unto me, all ye that labour and are heavy laden, and I will give you rest. Take my yoke upon you, and learn of me; for I am meek and lowly in heart: and ye shall find rest unto your souls. For my yoke is easy, and my burden is light.”
That is the Spirit of Jesus. And that is what draws other meek hurting hearts to Him — “the love of God which is shed abroad in our hearts by the Holy Spirit which was given unto us” …
Keep spreadin’ the word, brother!