6 :12–15 Proverbs uses types to make the point that certain ways of acting have inherent consequences. The typifying intensifies the picture. All the physical organs—mouth, eyes, feet, fingers—are at the service of evil. Cf. Rom 6:12–13: “Therefore, sin must not reign over your mortal bodies so that you obey their desires. And do not present the parts of your bodies to sin as weapons for wickedness, but present yourselves to God as raised from the dead to life and the parts of your bodies to God as weapons of righteousness.”
6:16 Six…seven: this literary pattern (n, n + 1) occurs frequently; cf., e.g., Am 1–2; Prv 30:18–19.
6:17–19 The seven vices, symbolized for the most part by bodily organs, are pride, lying, murder, intrigue, readiness to do evil, false witness, and the stirring up of discord.