To fold the hands is a gesture of laziness and is another way of saying that the person refuses towork. Alternate translation: "The fool refuses to work" (See: [[rc://en/ta/man/translate/translate-symaction]] and [[rc://en/ta/man/translate/figs-parallelism]])
This speaks of a person destroying himself as if he were eating his own body. Alternate translation: "as a result, he causes his own ruin" or "and as a result, he destroys himself" (See: [[rc://en/ta/man/translate/figs-metaphor]])