Albert Barnes Commentary Leviticus 19:14

"Thou shalt not curse the deaf, nor put a stumblingblock before the blind; but thou shalt fear thy God: I am Jehovah." — Leviticus 19:14 (ASV)

The meaning appears to be, "You shall not utter curses to the deaf because he cannot hear you, neither shall you put a stumbling-block in the way of the blind because he cannot see you , but you shall remember that though the weak and poor cannot resist, nor the deaf hear, nor the blind see, God is strong, and sees and hears all that you do." Compare Job 29:15.