예레미야 48:10 할라카: Keset HaSofer, Mishneh Torah, Torah Study, Mishneh Torah, Kings and Wars & Sefer Chasidim

It is taught in a beraita: Rabbi Meir said: When I came to Rabbi Ishmael he said to me: My son, what is your occupation? I said to him: I am a scribe. He said to me: My son, be scrupulous with your work for it is heavenly work. Lest you omit one letter or you add one letter it could come out that you destroyed the entire world. (Eiruvin 13:a) From here one sees how a sofer must be in extreme awe of Hashem. If he makes a blemish or if he doesn’t make a correction properly, he causes his soul to be lost. Since he steals from the masses and causes them to sin leaving them without fulfilling a commandment and making blessings in vain. Concerning him scripture states: One sinner destroys much good. And it also states: Cursed is he who does the work of Hashem with deceit. Therefore he who is fitting and have the power should appoint proper sofrim, men of truth, who hate bribes, Torah scholars, who fear G-d and tremble at His words, in every city and in every town just as shochtim are appointed and examined. All who writes good and valid Sifrei Torah, tefillin, and mezuzot according to all his abilities, his reward is doubled and redoubled and he is saved from the judgement of Gehinnom. (From the Laws of Writing Tefillin by Rabbi Avraham of Sinsheim and from the Levush)

A teacher of school children who leaves the children and departs from the school, or who engages himself in another kind of work while he is with them, or who is negligent in teaching them, behold, he is included among those of whom it is said: "Cursed be he that doeth the work of the Lord with a slack hand" (Jer. 48.10). It is, therefore, improper to appoint any teacher save one who is God fearing, diligent in reading and grammar.³Baba Batra, 21b. C.

"What man is there who is fearful and is faint-hearted" (Deut. 20:8)? Exactly so. This is one whose heart has no strength to withstand the strains of war⁶⁸He is afraid he’ll be killed in battle due to his sins.. Now, once one becomes entangled with the perplexities of war, he should trust the Hope of Israel, and He will save him in times of trouble. He should know he is doing battle for the unity of the Name. He should place his life in His Hands and neither be afraid nor alarmed. He should not think about his wife or his children. Rather, he should wipe away thoughts of them from his heart, and clear himself of everything for the war. Anyone who thinks about or contemplates (matters) during the battle and frightens himself violates a Negative Commandment, as it says, “do not be faint of heart, nor be alarmed, do not flee, and be not frightened before them” (Deut. 20:3). And not only that, but all the blood of Israel hangs around his neck. If he did not win and did not fight the battle with all his heart and soul, he is like one who spills everyone’s blood, as it says, “lest he not melt his brothers’ hearts as has his” (Deut. 20:8). It is explicitly stated in the Tradition that, “Cursed be he who does the work of G-d sluggishly, and cursed be he who keeps back his sword from blood” (Jeremiah 48:10). However, anyone who does fight with all his heart without fear, and his intentions are only to Sanctify the Name, is promised that he will not be harmed and nothing bad will happen to him. He will build an upright home in Israel, and he and his children will earn merit forever, and merit The World To Come, as it says, “certainly, G-d shall make for my master a faithful house, for the wars of G-d does my master fight and no evil will be found with you all your days…And the soul of my master will be bound with the living, with the Lord your G-d…” (I Samuel 25:28-29).