Wherefore take unto you the whole armour of God, that ye may be able to withstand in the evil day, and having done all, to stand… and take the sword of the Spirit, which is the word of God:- Ephesians 6:13, 17

We are to take this sword with a purpose. We are to use it that we may be able to stand and to withstand. If you want to stand, draw the sword, and smite your doubts. How fiercely unbelief assails! Here comes a doubt as to your election. Pierce it through with the Word. Anon comes a doubt as to the precious blood. Cleave it from head to foot with the assurance of the Word that the blood of Jesus cleanseth us from all sin. Here comes another doubt, and yet another. As quick as arm can move, drive texts of Scripture through every new fallacy, every new denial of truth, and spit the whole of them upon the rapier of the Word. It will be for your good to kill these doubts outright. Do not play with them, but fight them in real earnest. You will find that temptations also will come in hordes. Meet them with the precepts of sacred Writ, and slay even the desire of evil by the Spirit’s application of the Holy Word. The washing of water by the Word is a glorious cleanser. Discouragements will arise like mists of the morning. Oh, that God’s Word may shine them away with the beams of the promises! Your afflictions multiply, and you will never be able to overcome impatience and distrust except by the infallible Word of God. You can bear trial, and bear it patiently, if you use this weapon to kill anxiety. You will “stand fast in the evil day”, and having done all, you will still stand, if this sword be in your hand. ~ C.H. Spurgeon

https://www.blueletterbible.org/Comm/spurgeon_charles/sermons/2201.cfm