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)

408. Once the Church has been so vastated that faith exists no longer a fresh start is made, that is, new light begins to shine, which in the Word is called 'the morning'. The reason new light or the morning does not shine before the Church has been vastated is that the things constituting faith and charity have been mingled with things that are unholy, and as long as they are mingled no light or charity can possibly be introduced, for tares are ruining all the good seed. But once faith is no more, it is no longer possible for faith to be profaned, since people do not believe what is said. People who do not acknowledge and believe something but merely know it are, as stated already, incapable of profaning it. A similar situation exists at the present time in the case of Jews who, because they live among Christians, cannot help knowing that the Lord is acknowledged by Christians to be the Messiah whom they, the Jews, have been waiting for and are awaiting still. Yet they are incapable of profaning because they do not acknowledge and believe these matters. Nor, in a similar way, can Moslems and gentiles who have heard about the Lord do so. This was the reason why the Lord did not come into the world until the Jewish Church had ceased to acknowledge and believe anything.