38 Traditionally, “lilies.” According to L&N 3.32, “Though traditionally κρίνον has been regarded as a type of lily, scholars have suggested several other possible types of flowers, including an anemone, a poppy, a gladiolus, and a rather inconspicuous type of daisy.” In view of the uncertainty, the more generic “flowers” has been used in the translation.
39 Or, traditionally, “toil.” Although it might be argued that “work hard” would be a more precise translation of κοπιάω (kopiaō) here, the line in English reads better in terms of cadence with a single syllable.

In other versions

And why are you anxious about clothing? Consider the lilies of the field, how they grow: they neither toil nor spin,

“And why do you worry about clothes? See how the flowers of the field grow. They do not labor or spin.

And why do you worry about clothes? Observe how the wildflowers of the field grow: They don’t labor or spin thread.

“And why worry about your clothing? Look at the lilies of the field and how they grow. They don’t work or make their clothing,

And why are you anxious about clothing? Observe the lilies of the field, how they grow: they do not toil or spin,

And why take ye thought for raiment? Consider the lilies of the field, how they grow; they toil not, neither do they spin:

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