"It is strange that any should interpret this as speaking of Jesus’ sufferings on the cross, yet that is how many interpreters view it. The cross, however, does not reveal warfare, but the great love, reconciliation, and redemption of God in Christ! Furthermore, in the scene above it is not His own blood that is shed in weakness and in meekness and in sacrifice, but the blood of foes trampled in wrath. He is on His way to battle! And “every battle of the warrior is with confused noise and garments rolled in blood” (Isa. 9:5). The language is symbolic, of course. Jesus does not wield a literal sword of steel; His sword is the sword of the spirit, which is the word of God. He does not go out physically killing multitudes of people, and soaking His garment with their blood. Rather, His warfare is spiritual, He slays the enemies within man, which appear as the man, but are not the man that God intends. Oh, yes! He slays men, but it is the natural man — the human consciousness, the carnal mind, the ego, self-will, lust, deception, fear, rebellion, bondage, and every sin of the old Adamic man. Wielding His powerful sword of the spirit He comes upon the world of natural, carnal-minded, sinning men, and He comes to judge and to make war! His flaming eyes picture to us the holy passion that burns in His bosom at this moment, now that He is ready to subdue the earth and establish His righteous kingdom in the hearts of all men everywhere!"
Much more spiritual warfare in the link:
"His Word is His Sword!"
"It is a word that slays the natural man and quickens the spiritual man!"
"and His name is called The Word of God” (Rev. 19:13)."
"My heart leaps within me for joy as I contemplate this beautiful theme of His Name — The Word of God. It is an instructive thing to know that God has never been silent. God’s a talker! This truth is basic to spiritual understanding. Had God remained silent, we would either not exist at all, or our situation would be desperate. If God is a talker, then we had best be listeners. “God, who at sundry times and in divers manners spake in time past unto the fathers by the prophets, hath in these last days spoken unto us by His Son…by whom also He made the worlds” (Heb. 1:1-2). “In the beginning was the Word, and the Word was with God, and the Word was God…all things were made by Him” (Jn. 1:1-3). "And God said, Let there be…and there was” (Gen. 1:3). God has always been a talker, but the writer to the Hebrews tells us that all God has ever spoken is now embodied in Christ. “God hath spoken unto us by His Son.” The Amplified Bible says, “But in the last of these days He has spoken to us in the person of a Son…” The Greek text, however, reads simply, “God has spoken to us IN SON.” IN SON! Or God spoke to us in One who has the character that He is a SON, revealing the realm and relationship of sonship to God. It means more than the idea that God spoke through His Son; it signifies that God spoke in son, that is, SONSHIP IS THE MESSAGE! God spoke through Christ’s Sonship. “If you have seen me, you have seen the Father.” Sonship is the revelation of the Father. Therefore, it was more than the words that Jesus spoke; it was the life He lived! HE was the message! HE was the word!"