en_tn_lite_do_not_use/psa/090/006.md

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)