The Armor of God - The Shield of Fath - Eph 6:16
It's called "the Armor of God" because its components are not of our own making, but are the gift of God. Some wrongly credit the "shield of faith" to themselves, but this is a recipe for defeat against the flaming arrows of the evil one. Only a supernatural, God-given faith can withstand those assaults. We rob God and indeed even rob ourselves of great resources in the Christian life when we ascribe any of them to ourselves and not to Christ alone. (Eph 6:10-18)
Scripture frequently refers to the the LORD as our shield (Gen. 15:1; Ps. 5:12; Prov. 30:5), so when we take up the shield of faith it means we rest in the Lord ... in Christ Himself.
The Holy Spirit has joined us to Christ and our supernatural faith is like a shield because it continually lays hold of Christ who covers us with His righteousness which makes us immune to the attacks of Satan. Satan paces around the earth hoping to falsely accuse the brethren as being not worthy of the kingdom of God. Of course if we remembered our own record, he would be right, Of ourselves, in armor of our own crafting we have no defense against Satan's fiery darts. And if we ascribe the shield of faith to something we muster up in the flesh we would be unprotected and completely open to his attacks. But the shield of faith is not something we have to muster up ... it is a piece of armor the Lord has given us to use Only Christ our shield protects us.
The Reformed understanding of total depravity appears to be wrong. Deuteronomy 30: 11, 14 declares human ability to obey God:
A frequent question the Christian may encounter as we bring the gospel to the world is "Do you think I am going to hell?" or "Do you think such and such type of person person is going to hell? (because of some heinous sin they have committed)" This question is often loaded and not all what appears on the surface. Most of you are probably familiar with this. At early stages of the conversation, when people may still be on the defensive, the skeptic may not yet be trying to ascertain real information about what the Bible says about their eternal state, but instead, are trying to draw out your self-righteousness or judgmentalism toward them. If you perceive this to be the case, and want to know what might be a biblical response, read on. 
To the mass of ill-deserving sinners on earth, God holds out the gospel that any person who looks in faith to the Son will receive eternal life. But what if no one actually responded to that message? What if not one person took advantage of this opportunity? Because this is the actual condition we find man in - No amount of outward appeals by God to man's heart or reason will suffice to persuade him to come to Jesus. Left to himself he is hopelessly given over to darkness. If he refuses to come it isn't because God is holding him back or coercing him against his will in the way of sin. This is what man wants in his heart of hearts.
Question: The Bible clearly shows that the choices we make will alter our destiny. For example, God appeals to wrongdoers, saying: “Turn back, please, every one from his bad way and from the badness of your dealings . . . that I may not cause calamity to you.” (Jeremiah 25:5, 6) This appeal would be pointless if God had already fixed each individual’s destiny. Moreover, God’s Word states: “Repent, therefore, and turn around so as to get your sins blotted out, that seasons of refreshing may come from the person of Yahweh.” (Acts 3:19) Why would Yahweh ask people to repent and turn around if he knew beforehand that they could do absolutely nothing to change their destiny?