You shall not curse the deaf, nor put a stumbling block before the blind, but shall fear your God: I am the LORD.
This base action of reviling or cursing a deaf person is here condemned. But that is not all; there is something more forbidden by this law; for it seems to be of a proverbial nature, and the general meaning is, Thou shalt not take the sordid advantage of a man's incapacity to defend himself, and hurt him either in his body, his fortunes, or his reputation. To abuse an absent person, to calumniate people in secret, to attack another's reputation in the dark and in disguise, to defame those who are dead, to hurt in any manner those who are unable to help and redress themselves, all this may be called, To curse the deaf.
(J. Jortin, D. D.)
Parallel VersesKJV: Thou shalt not curse the deaf, nor put a stumblingblock before the blind, but shalt fear thy God: I am the LORD.