What is a shield? It’s a form of protection, for warriors, it can be something that a warrior can use to repel something solid that would harm their bodies. In the olden days, it could be arrows, rocks, javelins, something deadly that can either injure us in a major way, or can kill us outright. It’s “spiritual warfare” and it is true in the olden days, as it is now.
“16 in addition to all, taking up the shield of faith with which you will be able to extinguish all the flaming arrows of the evil one.” – Ephesians 6:16, The Armor of God – (Ephesians 6:10-24)
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