All things are of Christ, because all things came from Christ.  The electric guitar is no more or less Christ's than the Hammond B3 organ.  Rock-n-Roll or Jazz are no more or less Christ's than Gospel music.  A judge's robe is no more or less Christ's than a choir robe.  And, if all things came from Christ, all things will flow back to Christ, and the Christ-consciousness, at the appointed time.
 
We must take caution that we are not acting as a temporary obstacle hindering those things from reaching their place of origin through our desire to achieve separation - or what some would call "holiness" - or because of our personal taste.
 
The earth is the Lord's, everything in it, every person on it.  So, it is not a stretch to fathom that God will collect His things; all of them.  All things are already God's, but at the right time God will awaken all conscious thought to the awareness of our beginnings in Him and unveil our eternal connectedness to Him.
 
All is sacred.  Separation, or secularism, is an illusion and a disguise.  If there is a devil, it/he/she only exists as the illusion created by the camouflage of the world system (or religion).  The work of this enemy-mind is to make us think there is a wall of separation between man and God.  God will not only gather all people.  God will gather all thought, all consciousness!