<< Ephesians 6:13 >>
Wherefore take unto you the whole armour of God, that ye may be able to withstand in the evil day, and having done all, to stand.
KJV
 

Comments:

"Wherefore take unto you the whole armour of God"

Take all the armour of God.  Don't leave yourself unprepared for battle.  The earth is the battlefield and satan is our enemy.  The armour of God is described in the following verses as truth, righteousness, the gospel, faith, salvation and the word of God.  Don't leave any of these things behind. 

Paul is teaching here that the Christian must prepare himself.  All of these pieces of armour come from one source and that's knowledge of the word of God.  The Christian must equip himself with knowledge in order to know the truth, to have faith, and to know how to be righteous.  An unprepared Christian will find himself unable to stand on the evil day.

"that ye may be able to withstand"

The Christians who are to prepare themselves are told to so that they "may be able to withstand".  The "evil day" or day of judgment is going to be one of misery and horror for those who are ill prepared.  Either we will withstand or we won't.  Those who withstand will go to the right hand side of Jesus with His sheep, and those who do not will be herded to His left side and will then be cast into outer darkness where will be heard weeping and gnashing of teeth, (Matthew 25:30-46)

"in the evil day"

The evil day in view here is mentioned in the singular.  This is unquestionably the day of judgment in which all mankind will be judged.

2 Corinthians 5:10
"For we must all appear before the judgment seat of Christ; that every one may receive the things done in his body, according to that he hath done, whether it be good or bad."

Ecclesiastes 12:14
For God shall bring every work into judgment, with every secret thing, whether it be good, or whether it be evil.

Acts 17:31
Because he hath appointed a day, in the which he will judge the world in righteousness by that man whom he hath ordained; whereof he hath given assurance unto all men, in that he hath raised him from the dead.

Romans 14:10-12
⁽¹⁰⁾ But why dost thou judge thy brother? or why dost thou set at nought thy brother? for we shall all stand before the judgment seat of Christ.
⁽¹¹⁾ For it is written, As I live, saith the Lord, every knee shall bow to me, and every tongue shall confess to God.
⁽¹²⁾ So then every one of us shall give account of himself to God.

Matthew 12:36-37
⁽³⁶⁾ But I say unto you, That every idle word that men shall speak, they shall give account thereof in the day of judgment.
⁽³⁷⁾ For by thy words thou shalt be justified, and by thy words thou shalt be condemned.

John 5:28-29
⁽²⁸⁾ Marvel not at this: for the hour is coming, in the which all that are in the graves shall hear his voice,
⁽²⁹⁾ And shall come forth; they that have done good, unto the resurrection of life; and they that have done evil, unto the resurrection of damnation.

"and having done all, to stand"

Paul made sure no one could misunderstand his meaning here.  He already mentioned the necessity of equipping oneself with the whole armour of God.  He adds this final exclamation point to the end of his statement.  He made sure his brethren understood that they were to do everything he had taught them and failure to do so meant they would not stand. 

This entire context literally cries out to the Christian to study, to apply, to seek, and to obey God's will.  The whole armour of God is the sum total of all instruction and all commandments found in the new covenant of Christ.  In the great commission, Jesus is recorded as commanding every soul on earth to be taught to obey all things whatsoever He commanded.  Paul is obeying that commission absolutely.  The Ephesian Christians and all else who would read this epistle are commanded to do "all".  We are commanded to "teach all" and we are commanded to "do all" so that we can stand and not fall in the day of judgment.

That is exactly what Jesus meant when He gave the parable of wise and foolish house builders:

Luke 6:46-49
⁽⁴⁶⁾ And why call ye me, Lord, Lord, and do not the things which I say?
⁽⁴⁷⁾ Whosoever cometh to me, and heareth my sayings, and doeth them, I will shew you to whom he is like:
⁽⁴⁸⁾ He is like a man which built an house, and digged deep , and laid the foundation on a rock: and when the flood arose, the stream beat vehemently upon that house, and could not shake it: for it was founded upon a rock.
⁽⁴⁹⁾ But he that heareth, and doeth not, is like a man that without a foundation built an house upon the earth; against which the stream did beat vehemently, and immediately it fell; and the ruin of that house was great.

Those in the religious world who would teach that one is saved by belief only would do well to consider this scripture honestly and sincerely.  James teaches us that faith without works is dead, (James 2:26), and Paul is teaching the same thing.  Those who would stand on the evil day must do all. 

Similarly, those in the religious world who teach that the Christian can not so sin as to lose their salvation should likewise consider this scripture.  An eternally saved person on earth would have no need to be taught how to keep from falling.  Paul certainly did not teach these Christians they could never fall in this epistle.  He taught them what to do to keep from it. 

Ephesians 6:13