Here "edge" represents the part of swords that kill people, that is, either the point or the sharp edge. Also, all the swords of the Chaldeans are spoken of as if they were only one sword. See how you translated this in [Job 01:15](../01/15.md). (See: [[rc://en/ta/man/translate/figs-metaphor]] and [[rc://en/ta/man/translate/figs-genericnoun]])