Put on the full armor of God, so that when the day of evil comes, you may be able to stand your ground.@Ephesians 6:13
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William P. Merrill (1867-1954)

Charles Wesley, in Character of a Methodist, by John Wesley, circa 1741. The phrase adamant and gold echoes Paradise Lost by John Milton: Satan, with vast and haughty strides advanced, Came towering, armed in adamant and gold. Wesley seems to be saying that we turn Satan’s equipment against him.

Soldiers of Christ, William P. Merrill, 1895 ( pdf nwc).

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Charles Wesley (1707-1788)

Soldiers of Christ, arise,
And put your armor on,
Strong in the strength which God supplies
Through His eternal Son.
Strong in the Lord of hosts,
And in His mighty power,
Who in the strength of Jesus trusts
Is more than conqueror.

Stand then in His great might,
With all His strength endued,
And take, to arm you for the fight,
The panoply of God;
That, having all things done,
And all your conflicts past,
Ye may o’ercome through Christ alone
And stand entire at last.

Stand then against your foes,
In close and firm array;
Legions of wily fiends oppose
Throughout the evil day;
But meet the sons of night,
And mock their vain design,
Armed in the arms of heavenly light,
Of righteousness divine.

Leave no unguarded place,
No weakness of the soul,
Take every virtue, every grace,
And fortify the whole;
Indissolubly joined,
To battle all proceed;
But arm yourselves with all the mind
That was in Christ, your head.

Let truth the girdle be,
That binds your armor on,
In faithful, firm sincerity
To Jesus cleave alone.
Let faith and love combine
To guard your valiant breast:
The plate be righteousness divine,
Imputed, and impressed.

Still let your feet be shod,
Ready His will to do,
Ready in all the ways of God
His glory to pursue:
Ruin is spread beneath,
The Gospel greaves put on,
And safe through all the snares of death
To life eternal run. 

But, above all, lay hold
On faith’s victorious shield;
Armed with that adamant and gold,
Be sure to win the field:
If faith surround your heart,
Satan shall be subdued,
Repelled his every fiery dart,
And quenched with Jesus’ blood.

Jesus hath died for you!
What can His love withstand?
Believe, hold fast your shield, and who
Shall pluck you from His hand?
Believe that Jesus reigns,
All power to Him is given:
Believe, till freed from sin’s remains;
Believe yourselves to Heaven.

Your Rock can never shake:
Hither, He saith, come up!
The helmet of salvation take,
The confidence of hope:
Hope for His perfect love,
Hope for His people’s rest,
Hope to sit down with Christ above,
And share the marriage feast.

Brandish in faith till then
The Spirit’s two-edged sword,
Hew all the snares of fiends and men
In pieces with the Word;
’Tis written; This applied
Baffles their strength and art;
Spirit and soul with this divide,
And joints and marrow part.

To keep your armor bright,
Attend with constant care,
Still walking in your captain’s sight,
And watching unto prayer.
Ready for all alarms,
Steadfastly set your face,
And always exercise your arms,
And use your every grace.

Pray without ceasing, pray,
Your captain gives the word;
His summons cheerfully obey
And call upon the Lord;
To God your every want
In instant prayer display,
Pray always; pray and never faint,
Pray, without ceasing, pray!

In fellowship; alone,
To God with faith draw near;
Approach His courts, besiege His throne
With all the powers of prayer:
Go to His temple, go,
Nor from His altar move;
Let every house His worship know,
And every heart His love.

To God your spirits dart,
Your souls in words declare,
Or groan, to Him who reads the heart,
The unutterable prayer.
His mercy now implore,
And now show forth His praise,
In shouts, or silent awe, adore
His miracles of grace.

Pour out your souls to God,
And bow them with your knees,
And spread your hearts and hands abroad,
And pray for Sion’s peace;
Your guides, and brethren, bear
For ever on your mind;
Extend the arms of mighty prayer,
In grasping all mankind.

From strength to strength go on,
Wrestle, and fight, and pray,
Tread all the powers of darkness down,
And win the well-fought day;
Still let the Spirit cry
In all His soldiers, Come!
Till Christ the Lord descends from high
And takes the conquerors home.