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One of the classical verses that people turn to for the spiritual weapons of warfare is in Ephesians 6:10-18. What is interesting is that Ephesians is a prison epistle so it is highly likely that Paul has in mind the prison guards who are dressed in this armor.
There are 6 pieces of armor mentioned and each of the armor corresponds to the following:
- Belt = Of Truth (v. 14)
- Breastplate = of Righteousness (v. 14)
- Footwear = Preparation with the Gospel of peace (v. 15)
- Shield = of Faith (v. 16)
- Helmet = of Salvation (v. 17)
- Sword = Word of God (v. 17)
These weapons are mentioned again in 1 Thessalonians 5:8. And since Paul is the author of Corinthians too, it is highly possible that Paul is emphasizing these weapons. He mentions clearly in the verse that the weapons are not carnal (or from this world) but from God.
This is a very important reminder for our apologetic endeavor. We often time think that our weapons for engaging with the philosophies and ideologies of the world are our intelligence or articulacy, but it is not. It is the Gospel revealed to us through the word of God. It is on these weapons we depend on.