"Take the sword of the Spirit, which is the word of God."—Ephesians 6:17.
TO BE A CHRISTIAN is to be a warrior. The good soldier of Jesus Christ must not expect to find ease in this world: it is a battle-field. Neither must he reckon upon the friendship of the world; for that would be enmity against God. His occupation is war. As he puts on piece by piece of the panoply provided for him, he may wisely say to himself, "This warns me of danger; this prepares me for warfare; this prophesies opposition."
Difficulties meet us even in standing our ground; for the apostle, two or three times, bids us "Stand." In the rush of the fight, men are apt to be carried off their legs. If they can keep their footing, they will be victorious; but if they are borne down by the rush of their adversaries, everything is lost. You are to put on the heavenly armor in order that you may stand; and you will need it to maintain the position in which your Captain has placed you. If even to stand requires all this care, judge ye what the warfare must be!~Charles Spurgeon, The Sword of the Spirit
By the words in the Bible, we are given to understand that our life is a fight. Here is the enemy:
What we must do is put on our armor, pray always, and stir one another up to good works. Confessing our sin and repenting of it, we gain more strength in wielding the sword of the Lord which is His word, we have ample military support to stand against the world, the devil, and the flesh.
Our Jesus has fulfilled the prophecy:
He will swallow up death forever, and the Lord GOD will wipe away tears from all faces; the rebuke of His people he will take away from all the earth; for the LORD has spoken. (Isaiah 25:8 )