Psalms 34:2

Now from the places where the sense in which they are used is more manifest we must gather the sense in which they are to be understood in obscure passages. For example, there is no better way of understanding the words addressed to God, “Take hold of shield and buckler and stand up for mine help,” than by referring to the passage where we read, “Thou, Lord, hast crowned us with Thy favor as with a shield.” And yet we are not so to understand it, as that wherever we meet with a shield put to indicate a protection of any kind, we must take it as signifying nothing but the favor of God. …

2. “Judge Thou, O Lord” (saith he), “them that hurt me, and fight Thou against them that fight against me” ( ver. 1 ). “If God be for us, who can be against us?” And whereby doth God this for us? “Take hold” (saith he) “of arms and shield, and rise up to my help” ( ver. 2 ). A great spectacle is it, to see God armed for thee. And what is His Shield, what are His Arms? “Lord,” in another place saith the man who here also speaketh, “as with the shield of Thy good-will hast Thou compassed us.” But His Arms, wherewith He may not only us defend, but also strike His enemies, if we have well profited, shall we ourselves be. For as we from Him have this, that we be armed, so is He armed from us. But He is armed from those whom He hath made, we are armed with those things which we have received from Him who made us. …

Lastly , the Author of our salvation teaches us what we ought not merely to think, but also to acknowledge in everything that we do. “I can,” He says, “of mine own self do nothing, but the Father which abideth in me, He doeth the works.” He says, speaking in the human nature which He had taken, that He could do nothing of Himself; and shall we, who are dust and ashes, think that we have no need of God’s help in what pertains to our salvation? And so let us learn in everything, as we feel our own weakness, and at the same time His help, to declare with the saints, “I was overturned that I might fall, but the Lord supported me. The Lord is my strength and my praise: and He is become my salvation.” And “Unless the Lord had helped me, my soul had almost dwelt in hell. If I said, My foot is moved: Thy mercy, O Lord, assisted me. …

But our belief is that they undertake this struggle not without effort on their part. For in their conflict they themselves have some sort of anxiety and depression, and especially when they are matched with stronger rivals, i.e., saints and perfect men. Otherwise no contest or struggle, but only a simple deception of men, and one free from anxiety on their part would be assigned to them. And how then would the Apostle’s words stand, where he says: “We wrestle not against flesh and blood, but against principalities, against powers, against world-rulers of this darkness, against spiritual wickedness in heavenly places;” and this too: “So fight I, not as one that beateth the air;” and again: “I have fought a good fight”? For where it is spoken of as a fight, and conflict, and battle, there must be effort and exertion and anxiety on both sides, and equally there must either be in store for …