Adam Clarke on Proverbs 21:6

Of them that seek death - Instead of מבקשי mebakshey, "them that seek," several MSS., some ancient editions, with Symmachus, the Septuagint, Vulgate, and Arabic, have מקשי mokeshey, the snares. He who gets treasures by a lying tongue, pursues vanity into the snares of death. Our common translation may be as good. But he who, by the snares of his tongue, endeavors to buy and sell to the best advantage, is pursuing what is empty in itself; and he is ensnared by death, while he is attempting to ensnare others.