The following is an interesting explanation by M. S. Lowndes about the spiritual armor that we should wear daily:
What are we fighting against? What do we need for protection?
We are fighting the Devil—Satan. We are not fighting people, but the powers of darkness in this world—Satan and his helpers. The protection we need is the armor of God.
What is the armor of God, and how can we clothe ourselves in it? Let’s look at each piece.
Belt of Truth — Standing firm in truth. Living our lives by the truth of God’s Word.
Breastplate of Righteousness — Walking uprightly before God. Aligning our lives to His standards.
Shod Feet — Standing with firm-footed stability, being ready.
Shield of Faith — Standing firm in our faith. This will squash all the fiery darts Satan sends.
Helmet of Salvation — Protection for our minds. Satan attacks us here more than anywhere. We need to be sure of our salvation and not waver or doubt.
All of these pieces are for protecting us—and need to be put on daily.
There is still one other piece we need to be armed with. This piece is not for protecting us, but for fighting with.
The sword of the Spirit — which is the Word of God.
We cannot fight the enemy if we don’t know the Word of God. It is vital for how effective we are when we use the sword, and how effective the rest of the armor is that protects us. No soldier goes to war with faulty weapons, or with faulty protection. Neither should we. The key here is to learn God’s Word. Hide it in your heart. Then you can put on God’s armor and be able to stand firm.
M. S. Lowndes
Apart from reading the Word, there is something else that we must do, which is very important. Once you read the Word, you then have to obey it. It’s like a contract between you and God: you do your part and obey the Word, and He does His part to give you all the advantages that the Word promises.
This is why the apostle James said, “But be doers of the Word, and not hearers only” (James 1:22). James goes on to say that if anyone is only a listener of the Word but not a doer, he is like someone who observes his natural face in the mirror. He may observe the kind of person he is (because of studying God’s Word)—patient, kind, respectful, giving, etc.—but when he walks away from that mirror, he forgets that he is that person. But if he instead looks into the mirror of the Word and reflects the Word, he will be blessed in all that he does (James 1:23-25).
But even way before James, God was telling His people to obey His Word. Check out what God told Joshua when he took over the leadership of Israel, after the death of Moses:
Joshua 1:8 This Book of the Law (this was the Word of God for His people in that day) shall not depart from your mouth, but you shall meditate in it day and night, that you may observe to do according to all that is written in it. For then you will make your way prosperous, and then you will have good success.
God was telling Joshua that he and the children of Israel need to remind themselves often of what the Word says and to do what is written in His Word, because that will make them well off and successful. The same goes for us as Christians in this day and age. We must do more than just hear the Word; we’ve got to follow through.
Luke 6:46-49 But why do you call Me ‘Lord, Lord,’ and do not do the things which I say? Whoever comes to Me, and hears My sayings and does them, I will show you whom he is like: He is like a man building a house, who dug deep and laid the foundation on the rock. And when the flood arose, the stream beat vehemently against that house, and could not shake it, for it was founded on the rock. But he who heard and did nothing is like a man who built a house on the earth without a foundation, against which the stream beat vehemently; and immediately it fell. And the ruin of that house was great.
Which house would you prefer to have?