Ephesians 6:12
"For we wrestle not against flesh and blood, . . ." (cont.)   
are other spirits which range abroad province of the world are
committed;
the darkness is chiefly spiritual darkness which
prevails during the present state of things, and the
wicked
spirits
are those which continually oppose faith, love, and
holiness, either by force or fraud; and labor to infuse unbelief,
pride, idolatry, malice, envy, anger, and hatred." . . . We con-
tend with these fallen spirits for the heavenly things which are
promised to us; and we strive against them, that we may not be
deprived of those we have.
. (Adam Clarke,Clarke's Commentary,
A Classic Help of Better Understanding of the Bible, Matthew -
Revelations:  Volume VI, Romans to Revelation (Nashville:
Abington /World Publishing, 1977, 468)

                 
   Ephesians 6:14a
"Stand therefore having your loins girt about with truth,"










Verse 14. Stand therefore] Prepare yourselves for combat,
having your loins girt about with truth. He had told them
before
to take the whole armour of God, ver. 13, and to put
on this whole armour.  
Having got all the pieces together, and
the defensive parts,
put on, they were then to gird them close
their bodies with the . . .
girdle; and instead of a ornamented
belt, such as the ancient warriors used, they were to have truth.
The Gospel of Jesus Christ is the truth of God; unless this be
known and conscientiously believed no man can enter the warfare
with any advantage or prospect of success. By this alone we
discover who our enemies are, and how they come on to attack
us; and by this we know where our strength lies; and, as the
truth is great, and must prevail, we are to gird ourselves with this
against all false religion, and the various winds of doctrine by
which cunning men and insidious devils lie in wait to deceive.
Truth may be taken here for sincerity; for if a man be not  
conscious to himself that
his heart is right before God, and he
makes no false pretenses to religion, in vain does he enter the
spiritual lists.
This alone can give him confidence:
  Let this be my brazen wall; that no man can reproach me with
        a crime, and that I am conscious of my own integrity.
(Adam Clarke,Clarke's Commentary, A Classic Help of Better
Understanding of the Bible, Matthew - Revelations:  Volume VI,
Romans to Revelation (Nashville: Abington /World Publishing,
1977, 470).

                      
Ephesians 6:14b
"and having on the breast-plate of righteousness;"
         







[2.] Righteousness must be our breast-plate. The breast-plate
secures the vitals, shields the heart. The righteousness of Christ
implanted in us is our breast-plate to fortify the heart against the
attacks which Satan makes against us. The apostle explains this
in I Thess. v. 8,
Putting on the breast-plate of faith and love. Faith
and love include all Christian graces; for by faith we are united to
Christ and by love to our brethren. These will infer a diligent
observance of our duty to God, and a righteous deportment towards
men, in all the offices of justice, truth, and charity. Matthew Henry,
Matthew Henry’s Commentary of the Whole Bible, Volume VI., Acts
to Revelation, Old Tappan: Fleming H. Revell Company, n.d.), 720).
  
The breast-plate of righteousness] The word righteousness, . . .
we have occasion to note, is a word of excessive import; it signifies
the
practice of righteousness or living a holy life; it signifies God's
method of justifying sinners;
and it signifies justification itself.
Here it may imply a consciousness of justification through the blood
of the cross; the principle of righteousness or true holiness implanted
in the heart; and a holy life, a life regulated according to the testi-
monies of God. As the
breast-plate defends the heart and lungs and
all other vital functionaries that are contained in what is called the
region of the thorax; so this righteousness, the life of God in the
soul of man, defence every living thing on which the man's spiritual
existence depends. While he posses this principle, and acts from it,
his spiritual and eternal life is secure.
(Adam Clarke,Clarke's
Commentary, A Classic Help of Better Understanding of the Bible,
Matthew - Revelations:  Volume VI, Romans to Revelation (Nashville:
Abington / World Publishing 1977, 470).    

                               
        Ephesians 6:15
"And your feet shod with the preparation of the
          Gospel of peace;"  









[3.] Resolution must be as the greaves of the legs: And their feet
shod with the preparation of the gospel of peace, v.
15. Shoes,
greaves . . . or  the like, were formerly par of the military amour
(I Samuel xvii. 6): the use of them was to defend the feet
against gail-traps, and sharp sticks, which were wont to be laid
privily in the way, to obstruct the marching of the enemy, those
who fell upon them being unfit to march.
The preparation of the
gospel of peace
signifies a prepared and resolved frame of heart,
to adhere to the gospel and abide by it, which will enable us to
walk with a steady pace in the way of religion notwithstanding
the difficulties and dangers that may be in it. It is styled
the
gospel of peace
because it brings all sorts of peace, peace with
God, with ourselves, and one another. It may also be meant of
that which prepares for the entertainment of the gospel, namely,
repentance. With this our feet must be shod: for by living a life
of repentance we are armed against temptations of sin, and the
designs of our enemy. Dr. Whitby thinks this may be the sense
of the words: "That you may be ready for the combat, , be shod
with the gospel of peace, endeavor after that peaceable and
quiet mind which the gospel calls for. Be not easily provoked,
nor prone to quarrel: but show all gentleness and all long-
suffering to all men, and this will certainly preserve you from
many great temptations and persecutions, as those shoes of
brass the soldiers from those gail-traps,"&c. Matthew Henry,
Matthew Henry’s Commentary of the Whole Bible, Volume VI.,
Acts to Revelation, Old Tappan: Fleming H. Revell Company, n.d.),
720).