God's word gives us answers to everyday problems. If you do not know God's word, you can and will be deceived by the lies and tricks of the enemy. You can find yourself believing whatever people say concerning God. You will end up following the ways of this world rather than God's will.
In Ephesians 6:13-17, the full armor of God is your protection from the enemy. We must first gird our loins with truth and put on the breastplate of righteousness. "Truth" holds everything together & refers to your integrity. When righteousness is practiced by the believer it protects the chest and heart from Satan. The "Shield of Faith" is to extinguish the flaming arrows of the evil one and the Helmet of Salvation guards our minds & thoughts. These are our weapons of defense. The only weapon of offense is the Sword of the Spirit which is the word of God.Why do we need to protect our chest & heart from Satan or extinguish flaming arrows of the evil one? Why do we need to guard our hearts and minds? We have an adversary who wants to kill, steal and destroy us. He wants to use men to oppose God's work. But the devil is a liar and we do not have to be deceived by him.
When Satan tried to tempt Jesus in Matthew 4:8-11 Jesus used scripture as His weapon of defense. "You shall worship the Lord your God, and serve Him only." Satan, as the prince of this world was within His rights to make this offer. Do not love the world nor the things in the world. If anyone loves the world, the love of the Father is not in him. For all that is in the world, the lust of the flesh and the lust of the eyes and the boastful pride of life, is not from the Father, but is is from the world. The world is passing away, and also it's lusts; but the one who does the will of God lives forever. 1 John 2:15-17The weapons we fight with are not weapons of the world. On the contrary, they have divine power to demolish strongholds. 2 Corinthian 10:4 Prayer is also a major and powerful weapon. Some examples of weapons formed against us are illness, depression, pain and fear. Believers, we do not give up the good fight but instead we will be victorious with our spiritual weapons.