A 'sword,' as in Ezekiel 21:9-15, signifies a person so desolated that he can see nothing good and true, but only falsities and contradictions. A 'sword,' in the Word, signifies the truth of faith combating and the vastation of truth. In an opposite sense, it signifies falsity combating and the punishment of falsity.

The 'sword,' in Revelation 1:16, represents a dispersion of falsities by the Lord because the sword came out from His mouth, which means it comes from the Word. Because the Word is understood by doctrine taken from it, this is also symbolically meant. It is called a sharp two-edged sword because it pierces the heart and soul.

A 'flaming sword which turned every way,' as in Genesis 3:24, signifies divine truth in extremes, which, like the Word in its literal sense, can be turned.

(Odkazy: Arcana Coelestia 2799)

410. There are two kinds of vastation. The first is the vastation of people who know yet do not wish to know, or who see yet do not wish to see, as was characteristic of the Jews, and is characteristic of Christians at the present time. The second is the vastation of people who neither know nor see anything because they have no knowledge, as was characteristic of gentiles in the past and still is characteristic of them today. When the final point of vastation is reached with those who know and yet do not wish to know, or who see and yet do not wish to see, a Church rises up anew, not however among the same people, but among others whom they call gentiles. This was what happened to the Most Ancient Church which existed before the Flood, what happened to the Ancient Church after the Flood, and also what happened to the Jewish Church. The reason new light at that point starts to shine for the first time is, as has been stated, that it is then no longer possible for people to profane things that are revealed, since they do not acknowledge and believe that these are true.