Gen4:22 And Zillah gave birth to Tubal-cain, who is the father of every maker of cutting instruments of brass and iron: and the sister of Tubal-cain was Naamah.
1Sa13:20 But all the Israelites had to go to the Philistines to get their ploughs and blades and axes and hooks made sharp;
Job16:9 I am broken by his wrath, and his hate has gone after me; he has made his teeth sharp against me: my haters are looking on me with cruel eyes;
Psm7:12 If a man is not turned from his evil, he will make his sword sharp; his bow is bent and ready.
Psm52:2 Purposing destruction, using deceit; your tongue is like a sharp blade.