Jesus is known as the word as seen in John 1:1-14 and it is this word that is the sword of division.The truth found only in Christ separates us from the flood of lies,in fact Jesus even said He came not to bring peace but a sword(Luke 12:49-53). 49 I am come to send fire on the earth; and what will I, if it be already kindled?50 But I have a baptism to be baptized with; and how am I straitened till it be accomplished!51 Suppose ye that I am come to give peace on earth? I tell you, Nay; but rather division:52 For from henceforth there shall be five in one house divided, three against two, and two against three.53 The father shall be divided against the son, and the son against the father; the mother against the daughter, and the daughter against the mother; the mother in law against her daughter in law, and the daughter in law against her mother in law.
The whole armor of God offered to us in Ephesians 6:10-17 is very needful for those who walk in faith,because it is the word we speak that causes division between the truth and a lie,and is the difference between the light verses the darkness!(Ephesians 6:10-17). 10 Finally, my brethren, be strong in the Lord, and in the power of his might.11 Put on the whole armour of God, that ye may be able to stand against the wiles of the devil.12 For we wrestle not against flesh and blood, but against principalities, against powers, against the rulers of the darkness of this world, against spiritual wickedness in high places.13 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.14 Stand therefore, having your loins girt about with truth, and having on the breastplate of righteousness;15 And your feet shod with the preparation of the gospel of peace;16 Above all, taking the shield of faith, wherewith ye shall be able to quench all the fiery darts of the wicked.17 And take the helmet of salvation, and the sword of the Spirit, which is the word of God: