Musar su Deuteronomio 10:20

Kohelet 12,13 states: "The sum of the matter, when all has been considered: 'Fear the Lord and keep His commandments, for that is man's whole duty.'" This is a reference to the commandment stated in our portion to revere G–d, to serve Him, to cleave to Him and to swear in His name. It is a commandment of a general all-embracing nature. Because the commandment covers so much ground, the Torah introduces it (10,12) with the words: "And now, what does the Lord ask of you, etc.?" I have explained the meaning of יראת שמים reverence for G–d, at length in my treatise עשרה מאמרים. It includes awareness of the unity of G–d as well as serving the Lord, especially the commandments listed in this פרשה. This commandment includes that we must be aware of G–d's unity and the need to serve Him. Why would the Torah have to tell us separately to swear by the name of G–d only? The reason must be that the very mention of G–d's name one reminds one of the duty to serve Him and to revere Him. Once one does so one would certainly not perjure oneself.

The second level is the severity of positive commandments: The foundation of the reward and the root of the recompense resulting from the service is [found] in the performance of positive commandments, as it is stated (Proverbs 13:13), “He who respects a commandment will be rewarded.” And it is [also] stated (Malachi 3:18), “And you shall come to see the difference [...] between him who has served God and him who has not served Him.” And the service [to God] is with commandments that depend upon (involve) actions - whether there is nothing besides the positive commandment or whether there is [also] a negative commandment with them, such as (Deuteronomy 15:7), “do not harden your heart, etc.” (which accompanies the positive commandment of charity). And the commandment of the service will be explained in the Gate of the Service (no longer extant), with God’s help. Nevertheless, there is a manner of reward for the one who is careful not to transgress a negative commandment that reaches [that] of one who does a commandment - such as if the opportunity for a sin comes to a man and he had a desire for a sexual prohibition, but he overcame his impulse - for this is from the essence of the fear of God, may He be blessed. And likewise someone who had the opportunity to get rich by cheating and [charging] interest and there is no one to see and to know; yet he went with innocence and clean hands - his reward for this will be like one who plants righteousness and toils [to do a positive] commandment. And so it is written (Psalms 119:3) “They have done no wrong, but have followed His ways.” And our Rabbis, may their memory be blessed, said (Yerushalmi Kiddushin 1:9), “Since they did not do wickedness, they have ‘followed His ways.’” And we have already discussed the explanation of this verse for you. And our Rabbis, may their memory be blessed, likewise said (Kiddushin 39b), “[If] one sits and does not transgress, he receives a reward as one who performs a commandment, [...] in a case where an opportunity to commit a sinful act presents itself to him and he is saved from it.” And they also said (Berakhot 6a), “‘Those who revere the Lord and esteem His name.’ - this is [a case] where an opportunity to commit a sinful act presents itself to him and he is saved from it.” Even [with] this reward [however], its essence and foundation is [based in] a positive commandment, since he suppressed his impulse with the fear of God, as it is stated (Deuteronomy 10:20), “You must fear the Lord, your God.” And our Rabbis, may their memory be blessed, said (Avot 2:1), “Be careful with a light commandment as with a weighty one, for you do not know the reward for the fulfillment of the commandments.” Yet behold [that] what will be done to anyone who transgresses a negative commandment is explicit in the Torah; and it allocates punishments and statutes and a code for what to do to them. And the punishments are forty lashes, death and expiation at the hands of the Heavens and the four death penalties of the court. But the reward for the fulfillment of the commandments is not explicit in the Torah, so that [people] not prevent themselves from fulfilling the light commandments and involve themselves only in the weighty ones.

Among the positive commandments in the Torah are some of the weighty ones that the masses are not careful about - for example the mention of [God’s] name in vain, as it is stated (Deuteronomy 10:20), “You shall fear the Lord, your God.” And our Rabbis, may their memory be blessed, said (Temurah 4:1), “We have been warned with this not to mention [God’s] name in vain.” And likewise acts of kindness, which is a positive commandment, as it is stated (Exodus 18:20), “and make known to them the way they are to go” - that is acts of kindness (Bava Metzia 30b). And they said (Sukkah 49b), “Acts of kindness are superior to charity, [since] charity is given to the poor, while acts of kindness are performed both for the poor and for the rich.” Therefore they said (Avot 1:2), “The world stands upon three things: On the Torah; on the service; and on acts of kindness.” And (Sukkah 49b) “charity can be performed only with one’s money, while acts of kindness can be performed both with his person and with his money.” For a person is obligated to exert himself in seeking good for his people and to dedicate himself to the betterment of his fellow - whether poor or rich. And this is one of the main weighty commandments required of a person, as it is stated (Micah 6:8), “He has told you, O man, what is good, and what the Lord requires of you - only to do justice, and to love kindness.” And likewise to go beyond the law, as it is stated (Exodus 18:20), “and the practices they are to follow.” And our Rabbis, may their memory be blessed, said (Bava Metzia 30b), “This is going beyond the letter of the law.” And there are many ways in this matter, such that this commandment would be from the weighty ones. It is all according to the contents of the case - as our Rabbis, may their memory be blessed, said (Bava Metzia 30b), “Jerusalem was destroyed only because they established their rulings on the basis of Torah law and did not go beyond the letter of the law.”