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Old English moððe (Northumbrian mohðe), common Germanic (cf. Old Norse motti, Middle Dutch motte, Dutch mot, German Motte "moth"), perhaps related to Old English maða "maggot," or from the root of midge (q.v.). Until 16c. used mostly of the larva and usually in reference to devouring clothes (cf. Matt. vi:20).
Heb. 'ash, from a root meaning "to fall away," as moth-eaten garments fall to pieces (Job 4:19; 13:28; Isa. 50:9; 51:8; Hos. 5:12). Gr. ses, thus rendered in Matt. 6:19, 20; Luke 12:33. Allusion is thus made to the destruction of clothing by the larvae of the clothes-moth. This is the only lepidopterous insect referred to in Scripture.