John Calvin 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)

Since the Law encompasses under the term "murder" all the wrongs by which people are unjustly injured, the cruelty that afflicts suffering individuals—whose misfortune should instead evoke our compassion—was especially to be condemned.

For, if any trace of humanity exists in us, when we meet a blind man, we will be concerned that he might stumble or fall, and, if he goes astray, we will reach out our hands to him and try to guide him back to the path; we will also spare the deaf, for to insult them is no less absurd or barbarous than to attack stones with insults.

It is, therefore, extreme brutality to add to the suffering of those whom our natural sense impels us to relieve, and who are already troubled more than enough.

Let us, then, learn from these words that the weaker people are, the more secure they should be from all oppression or injury. When we attack the defenseless, the crime of cruelty is greatly aggravated, while any insult against those suffering calamity is altogether intolerable to God.