How do we know the armor of God is effective?

The armor of God is effective as evidenced by its design to protect believers from the wiles of the devil, drawing from both the explicit teachings in Scripture and the experiences of Christians throughout history. As outlined in Ephesians 6:11-13, Paul stresses the necessity of this divine armor to withstand the evil day. Each component serves a unique purpose—such as the breastplate of righteousness that guards the heart against accusations of guilt—and collectively, they prepare believers for spiritual warfare. The testimonies of Christians who have relied on God’s armor in trials affirm its efficacy, affirming that through prayer and faith, believers can see tangible results in overcoming spiritual adversities.