to sharpen: to hone a blade, arrow, or weaponized speech to a cutting edge
This is the verb's secure, everyday meaning, and it covers eight of its nine appearances. Something is given an edge: a sword is honed for battle, arrows are filed to a point, and, most strikingly, a person's words are sharpened until they cut like a weapon. The picture is always one of readiness to wound.
The two pieces of this meaning are simply the two kinds of thing that get sharpened. Most often it is a literal weapon. But the poets repeatedly turn the image inward: a slanderer or accuser hones his tongue the way a soldier hones a blade, so that cruel speech becomes as deadly as steel. The leap from steel to speech is not a different idea; it is the same act of sharpening, applied to the mouth.
The sense of incisiveness behind this word also lies in the background of its hardest case (the command to parents in Deuteronomy 6:7), which is treated as a separate meaning below.
Nuances
Whether the verb at Psalm 73:21 belongs to שׁנן "to sharpen, pierce" or to the similar-looking שׁנה "to change."
- majorityA reflexive of "sharpen": I was pierced or cut to the heart. Most lexicons and English versions.; BDB, A Hebrew and English Lexicon of the Old Testament (1907), 1041-42, s.v. שׁנן
- minorityFrom שׁנה "to change": my feelings were altered or numbed, as the Greek Old Testament read it.; Septuagint, Psalm 72:21 (Rahlfs-Hanhart)