This refers to a people in a region in modern day Yemen. Here it represents a group of raiders or bandits. (See: [[rc://en/ta/man/jit/translate-names]] and [[rc://en/ta/man/jit/figs-metonymy]])
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 Sabeans are spoken of as if they were only one sword. (See: [[rc://en/ta/man/jit/figs-metaphor]] and [[rc://en/ta/man/jit/figs-genericnoun]])