第四项、信的盾牌
我们需要真理束腰，义遮盖良心，和平覆脚如鞋，并需要信保护我们全人如盾牌。信是在真理、义与和平之后。我们在生活中若有真理，有义作我们的遮盖，且有和平作我们的立足点，我们就自然而然的有信。这信可以抵挡仇敌火烧的箭。
我们的信，当然不是相信自己的能力、力量、功绩或美德；我们的信必须是相信神（可十一22）。第一，神是真的、活的、应时的、且便利的。第二，我们该相信神的心。不管我们身上发生甚么事，或有甚么苦难，我们总要相信神的心是好的。第三，我们该相信神的信实。我们会改变，但神永不改变。第四，我们需要信神的能力。第五，就是相信神的话。神受了约束，要成就祂所说的一切。第六，我们必须相信神的旨意。不论何事临到我们，我们都该不顾到我们的快乐或我们的环境，只顾到神的旨意。我们的环境会改变，但神的旨意永不改变。第七，我们必须相信神的主宰。因为神是主宰一切的，祂绝不会错。在祂的主宰权柄下，连我们的错误也互相效力，叫我们得益处。所以，我们需要完全相信神，相信神的心，相信神的信实，相信神的能力，相信神的话，相信神的旨意，并相信神的主宰权柄。我们若有这样的信，撒但火烧的箭就不能伤害我们。
火烧的箭就是撒但的试诱、题议、怀疑、问题、谎言和攻击。你有没有注意到，问号看起来很像一条蛇？撒但问夏娃说，“神岂是真说…？”魔鬼火烧的箭临到我们，乃是把一些思想注射到我们的心思里。要叫信心得保卫，抵挡撒但火烧的箭，我们需要一个正确的灵，同着无亏的良心。然而，信心主要不在我们的灵里，也不在我们的良心里，乃在我们的意志里，就是我们心中最强的一部分里。雅各书一章六节告诉我们，那疑惑的人，就像海中的波浪，被风吹动翻腾。这样的人意志游移不定。因此，我们若要有信心，就需要运用我们的意志。
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The Whole Armor of God (3) – Eph. 6:16
The Fourth Item: The Shield of Faith
We need truth to gird our loins, righteousness to cover our conscience, peace as the standing for our feet, and faith to shield our entire being. Faith comes after truth, righteousness and peace. If we have truth in our living, righteousness as our covering, and peace as our standing, we shall spontaneously have faith. This faith is a safeguard against the fiery darts, the attacks, of the enemy.
We certainly are not to have faith in our own ability, strength, merit or virtue. Our faith must be in God. First, God is real, living, present and available. We need to have faith in Him. Second, we should have faith in God’s heart. No matter what may happen to us or what kind of sufferings we may undergo, we must always believe in the goodness of God’s heart. Third, we should have faith in God’s faithfulness. We may change, but God does not change. Forth, we need to have faith in God’s ability. Fifth, our faith is faith in God’s word. God is bound to fulfill all that He has spoken. Sixth, we have faith in God’s will. no matter what befalls us, we should care not for our happiness or our environment, but for God’s will. Our environment may change, but God’s will never changes. Seventh, we must have faith in God’s sovereignty. Because God is sovereign, God could never make a mistake. Under His sovereignty, even our mistakes work for good. We all need to have a full faith in God, in God’s heart, in God’s faithfulness, in God’s ability, in God’s word, in God’s will and in God’s sovereignty. If we have such a faith, Satan’s flaming darts will not be able to damage us.
The flaming darts are Satan’s temptations, proposals, doubts, questions, lies and attacks. Have you ever noticed that a question mark looks very much like a serpent? It was Satan who asked Eve, “Hath God said?” The Devil’s flaming darts come as thoughts injected into our mind. In order to have the faith to be defended against Satan’s flaming darts, we need a proper spirit with a conscience void of offense. However, faith is not mainly in our spirit nor in our conscience, but in our will, the strongest part of our heart. In James 1:6 we are told that he who doubts is like a wave of the sea, driven by the wind. Such a person has a vacillating will. Hence, if we would have faith, we need to exercise our will.