The writer continues to use parallelism in each of these verses, conveying a single idea using two different statements to emphasize Job's sense of the shortness of life. (See: [[rc://en/ta/man/translate/figs-parallelism]])
Job compares his lifetime to the quickness of a weaver's shuttle. Alternate translation: "My life goes by very quickly" (See: [[rc://en/ta/man/translate/figs-simile]])