The separation of church and state requires mutually exclusive entities/subjects for mutually exclusive venues and jurisdictions and laws. In both cases this maxim of law applies:
"The Creator controls his creations".

God created man... and since God created man, man is under God's ultimate control. The word of God is the operative law. The Kingdom of God is the venue.

In contradistinction, man created the nations of the world and man creates a nations laws. Under the nations laws are legal entities. A legal entity is a creation of man and this legal entity is subject to a nations laws. Citizens are legal entities, as are corporations, both being subservient to a nation's authority (police/courts etc), and both are capable of suing or being sued. 
Of course a man or woman is not born a citizen but rather attaches to one. A legal name is conceived on paper (starting with the registration of birth process and followed up with the certificate of birth). By assuming the legal name one animates the legal entity, thereby falling under the authority of a nations laws. The operative law is known as the "Rule of Law".

It is clear that the legal entity is a fictional character animated by a flesh and blood man/woman while operating in the "legal realm".

 Since legal entities are created by man and not by God, they are not of substance... they are merely of  "form". Curiously, this includes a Natural Person and a Human Being. Legalese defines a "Human" and "Form" as follows.

Human. Of the form and characteristics of man. (From Ballentine's Legal Dictionary 3rd Edition).

Form. The antithesis of substance; the appearance or superficial aspect rather than the substance or the essence. (Ballentine's Legal Dictionary 3rd Edition).

Form. 6. The external appearance without the essential qualities.
10. likeness; Image (Websters 1828).

Form. (n.) Show without substance; empty, outside appearance; vain, trivial, or conventional ceremony; conventionality; formality; as, a matter of mere form. A shape; an image; a phantom.(Webster's Unabridged).

In legalese, a human being may also be referred to as the "color of man". An entity suitable for the color of law. 

Another way to express this: A Human Being is a simulacrum of man. 

Color. An appearance, semblance, or simulacrum, as distinguished from that which is real. A prima facie or apparent right. Hence a deceptive appearance ; a plausible, assumed exterior, concealing a lack of reality ; a guise or pretext. . . . Black's Law 4th Ed.
Assume. To pretend. To undertake: engage; promise... Also taking up, receiving, adopting, taking to oneself, or to put on deceitfully, take appearance of, affect, or outwardly seem... to take on, become bound as another is bound, or put oneself in place of another as to an obligation or liability.... Black's Law 4th Ed.

SIMULACRUM. 2. Something having the form but not the substance of a material object. ( Websters' 3rd New International Dictionary pg. 2122)

SIMULACRUM. (plural: simulacra from Latin: simulacrum, which means "likeness, similarity"), is a representation or imitation of a person or thing.[1] The word was first recorded in the English language in the late 16th century, used to describe a representation, such as a statue or a painting, especially of a god. By the late 19th century, it had gathered a secondary association of inferiority: an image without the substance or qualities of the original. Wikipedia.

Human Being = Form of Man = Simulacrum of Man = A superimposed artificial reality

Deleuze can be said to reply with the following: “God made man in his image and resemblance. Through sin, however, man lost the resemblance while maintaining the image. We have become simulacra. We have forsaken moral existence in order to enter into aesthetic existence” (Deleuze, 1990).
Deluze suggests that through iniquity (sin) some have lost the resemblance to our creator and thus exist as the form of man ONLY... spiritually dead, without a spiritual connection to the Creator, without the spiritual essence which is the principle aspect of man. 

If all men are created equal, can we deny someone their faith and beliefs? If one considers himself a spiritless entity, with no connection to his Creator, do we not need to recognize his right of self determination?
Does a human being deny his own Creator? Is a human being so sinful?  
Human Being. Natural man: unenlightened or unregenerate. (From the Random House Dictionary of the English Language, 2nd Edition)
Unregenerate. not regenerate; unrepentant; an unregenerate sinner; not convinced by or unconverted to a particular religion; wicked, sinful, dissolute. (From the Random House Dictionary of the English Language, 2nd Edition). International Standard Bible Encyclopaedia
4. The Natural Man:
The "natural man" is the "old man," the "outward man," the "carnal man"-man as he is by nature, as he is firstborn, contra-distinguished to man as he is changed by the Spirit, as he is second-born or regenerated. There. is an "old" life, an "outward" life, a "carnal" life, a "natural" life, as contrasted with the "new" life, the "inward" life, the "spiritual" life, the "gracious" life. The "natural man" is a bold and vivid personification of that depraved nature which we inherit from Adam fallen, the source and seat of all actual and personal transgressions.

HUMAN. 3. Profane; not sacred or divine. 
American Dictionary of the English Language, Noah Webster, 1828.
PROFANE. 3. Not sacred; secular; relating to secular things; as profane history. Webster's Dictionary 1828.
PROFANE. Irreverent towards God or sacred things; written or spoken; acting or acted in manifest or implied contempt of sacred things. Town of Torrington v. Taylor. Black's Law 4th. Ed.
BLASPHEMOUS. Impiously irreverent with regard to God. Samuel Johnson's Dictionary 1755.
Does this not prove a human being is profane and irreverent to God or sacred things?
a philanthropist; an anti-Trinitarian who rejects the doctrine of Christ's divinity; a perfectionist. (In Colliers New Dictionary of the English Language, 1928)

Humanitarianism. the doctrine that humankind may become perfect without divine aid. (In Webster's New World Dictionary , Third College Edition, 1988, page 657)

Humanism. any system or mode of thought or action in which human interests, values and dignity predominate, especially an ethical theory that often rejects the importance of a belief in God." (Random House Webster's College Dictionary, 1990)

Secular Humanism. The philosophy or life stance of secular humanism (alternatively known by some adherents as Humanism, specifically with a capital H to distinguish it from other forms of humanism) embraces human reason, ethics, social justice and philosophical naturalism, while specifically rejecting religious dogma, super-naturalism, pseudoscience or superstition as the basis of morality and decision making. (Wikipedia).

Human. 3. Belonging or relative to man as distinguished from God or superhuman beings; pertaining to the sphere or faculties of man (with implication of limitation or inferiority); mundane; secular. (Often opposed to divine.). (From the Oxford New English Dictionary of 1901).

Relative. 2. Considered not absolutely, but as belonging to, or respecting something else. (Samuel Johnson's Dictionary 1755) 

1 Corinthians 2:14 But the natural man receiveth not the things of the Spirit of God: for they are foolishness unto him: neither can he know them, because they are spiritually discerned.

Natural Person. means human being, and not an artificial or juristic person." (Shawmut Bank, N.A. v. Valley Farms, 610 A. 2d. 652, 654; 222 Conn. 361)

Natural Person: Any human being who as such is a legal entity as distinguished from an artificial person, like a corporation, which derives its status as a legal entity from being recognized so in law. Natural Child: The ordinary euphemism for 'bastard' or illegitimate." (Amon v. Moreschi, 296 N.Y. 395, 73 N.E.2d 716." Max Radin, Radin's Law Dictionary (1955), p. 216)

Naturalism. A system of morality or religion having a purely natural basis; a view of the world, and of man's relationship to it, in which only the operation of natural, as opposed to supernatural or spiritual, laws and forces is assumed.' and 'naturalist' is defined as: 'One who follows the light of nature, as contrasted with revelation. (The Shorter Oxford English Dictionary, 1933)

Natural. An idiot; one whom nature debars from understanding; a fool. (Samuel Johnson's Dictionary 1755)

William Osler
The natural man has only two primal passions, to get and to beget

Thomas Boston, quoted in Augustus Toplady, Complete Works
"The natural man is a spiritual monster. His heart is where his feet should be, fixed upon the earth; his heels are lifted up against heaven, which his heart should be set on. His face is towards hell; his back towards heaven. He loves what he should hate, and hates what he should love; joys in what he ought to mourn for, and mourns for what he ought to rejoice in; glories in his shame, and is ashamed of his glory; abhors what he should desire, and desires what he should abhor."

Take the thoughts out of that narrow compass he has been all his life confined to, you will find him no more capable than a perfect natural.

That a monster should be such a natural.

“Idol worship consists of paying reverence to the outward form and ignoring the indwelling spirit” (Law Notes, April 1917, pg. 2).

The spiritually discerned human is subject to strong delusion (deceit).
 2 Th 2:10 - 2:11   And with all deceivableness of unrighteousness in them that perish; because they received not the love of the truth, that they might be saved. And for this cause God shall send them strong delusion, that they should believe a lie:

Man has been reformed (by deceit) into believing in the false image of man (the human being). These legal entities now serve man (the creature) more than the Creator.

Romans 1:25 Who changed the truth of God into a lie, and worshipped and served the creature more than the Creator, who is blessed for ever. Amen.

The Trap of Deception
Jeremiah 5: 26-27 For among my people are found wicked men: they lay wait, as he that setteth snares; they set a trap, they catch men. As a cage is full of birds, so are their houses full of deceit: therefore they are become great, and waxen rich.

The formation of the "human being" fulfils the requirement for a secular " subject " for a secular society and subject to secular laws (the Rule of Law).
Just as man has a Father (the Creator), Legal Entities have a Father as well. 

Father. The originator and transmitter of anything; the author of a family or society of persons animated by the same spirit as himself; one who has infused his own spirit into others, who actuates and governs their minds. (Thayers Greek Lexicon). 

Who is the father of the legal entity?
govern = control, mente = mind. Govern-ment = Mind Control.

Just for giggles...
Lets dissect the compound word hu-man to see what we get !
Human ;  IE Hue man.
We see that HUE is defined as COLOR which is defined as SIMULACRUM. 

Hue. Colour; dye . Samuel Johnson's Dictionary 1755
Colour. 6. Appearance; pretence. Samuel Johnson's Dictionary 1755
Color. An appearance, semblance, or simulacrum, as distinguished from that which is real. A prima facie or apparent right. Hence a deceptive appearance ; a plausible, assumed exterior, concealing a lack of reality ; a guise or pretext. . . . Black's Law 4th Ed.

So, by investigating the compound word human we also arrive at the same conclusion as the legal definition. Since a human lacks the principle aspect of man, a human cannot be defined as "man". A human is merely defined as the "form of man", which is equivalent to the appearance of man, rather than the substance or essence of man.

A summary of a Human:
 --A Human is merely of "form" (a false image, a construct of the mind)
--A human (of form) is the antithesis of a man (of substance). 
--A Human is a profane being
--A Human is a blasphemous being
--A Human is neither sacred nor divine
--A Human is Irreverent towards God or sacred things

By claiming to be human or a human being, one is also (indirectly) claiming to be "a profane and spiritless shell . One of mere form, lacking the substance of what man truly is. The antithesis of man and a creation of man.