Leviticus 19:14

לא תקלל חרש THOU SHALT NOT CURSE THE DEAF — I have here only the law that one must not curse the deaf: whence do I know that any person is included in this prohibition and that the meaning is, Thou shalt not curse even the deaf? Because Scripture states (Exodus 22:27) "Thou shalt not curse בעמך, anyone among thy people". But if this be so why does Scripture say חרש and does not use some more general expression? It does so in order to offer an analogy: What is the case with the חרש? He is one who cannot hear your curse and therefore cannot feel aggrieved, but he has the characteristic of being a living person! The same applies to all living, thus excluding a dead person, who though he cannot hear and feel aggrieved, is not living (Sifra, Kedoshim, Section 2 13; cf. also Sanhedrin 66a). ולפני עור לא תתן מכשל THOU SHALT NOT PUT A STUMBLING BLOCK BEFORE THE BLIND — This implies: "Give not a person who is "blind" in a matter an advice which is improper for him. Do not say to him: "Sell your field and buy from the proceeds of the sale an ass", the fact being that you are endeavouring to circumvent him and to take it (the field) from him (Sifra, Kedoshim, Section 2 14). ויראת מאלהיך BUT THOU SHALT BE AFRAID OF THY GOD — Because in this case it is not given to human beings to know whether the intention of this man (the offender) was for the advantage or the disadvantage of the person whom he advised, and he thus might be able to evade the responsibility by saying: "I meant it for the best", Scripture therefore states with reference to him: "But thou shall be afraid of thy God" Who is cognizant of thy secret thoughts. Similarly in all actions where it is given only to the heart of him who does it to know the motive that prompts him and where other people have no insight into it, Scripture states, "But be afraid of thy God!" (Sifra, Kedoshim, Section 2 14; Bava Metzia 58b).

לֹא־תְקַלֵּ֣ל חֵרֵ֔שׁ וְלִפְנֵ֣י עִוֵּ֔ר לֹ֥א תִתֵּ֖ן מִכְשֹׁ֑ל וְיָרֵ֥אתָ מֵּאֱלֹהֶ֖יךָ אֲנִ֥י יְהֹוָֽה׃

Thou shalt not curse the deaf, nor put a stumbling block before the blind, but shalt fear thy God: I am the Lord.