# in the morning they are like the grass ... in the evening it withers and dries up

The people are being compared to grass to emphasize that people do not live a very long time. (See: [[rc://en/ta/man/translate/figs-simile]])

# it blooms and grows up

Both of these phrases refer to how the grass grows. AT: "it begins to grow and develop" (See: [[rc://en/ta/man/translate/figs-doublet]])

# it withers and dries up

Both of these phrases refer to how the grass dies. AT: "it fades and dries up" (See: [[rc://en/ta/man/translate/figs-doublet]])