Genesis, Chapter 15, verse 1
Sometime afterward, the word of the LORD came to Abram in a vision: Do not fear, Abram! I am your shield; I will make your reward very great.
Let us take heart for the word (Christ) appeared to Abram and told him to not to fear the world. Abram was sore afraid because he had just been in battle with four Kings to rescue Lot his nephew and he feared retribution. Christ is our shield against the world (the four kings east, west, north and south) and he has rewarded us the spiritual children of Abram with eternal life. Our shield is our Faith. Do you believe? Do you really believe? Think of a shield it protects the heart from the arrows of the devil-which is doubt. But notice the shield does not protect the eyes and the head unless it is raise. When doubt comes around raise your shield of Faith and after the assault lower the shield and advance using your reason and your head and eyes in faith to make a difference in the world.
Additionally in Proverbs 2 it states that he is a shield to those who walk in integrity; let us resolve to walk resolutely in integrity by using faith and reason in the battle with the world, the flesh and the devil. True integrity is being willing to lay down your life for what you hold fast as the truth without wavering. Having integrity means avoiding the sins of envy and having a true love for God our creator and to love our neighbor as ourselves and our fellow humans treating them with kindness.