The tongue is a metonym for what a person says. Alternate translation: "by deceitful words" or "by telling lies" (See: [[rc://en/ta/man/jit/figs-metonymy]])
A fleeting vapor is a mist that quickly goes away in the morning. If someone tells lies in order to get wealth, that wealth will not last. Alternate translation: "is like a disappearing mist" (See: [[rc://en/ta/man/jit/figs-metaphor]])
A snare is a kind of trap. If someone tells lies in order to get wealth, he puts himself in terrible danger. Alternate translation: "is like a snare that kills" (See: [[rc://en/ta/man/jit/figs-metaphor]])