Here's a great tip:
Enter your email address and we'll send you our weekly magazine by email with fresh, exciting and thoughtful content that will enrich your inbox and your life, week after week. And it's free.
Oh, and don't forget to like our facebook page too!
Contact Us

Guard Your Life

Guard Your Life

Parshat Massei

Advanced Advanced

Towards the end of the Book of Numbers, we read about the cities of refuge. These were six cities in the Land of Israel where a person who killed someone out of negligence could find refuge from avenging relatives. If they found him outside of these cities, they could kill him.1 We see that the Torah considers the inadvertent murderer to be guilty to a certain degree.

This same theme – that a person is responsible for deaths caused by his negligence – is expressed in Deuteronomy2: "When you build a new house, you shall make a guardrail for your roof, so that you shall not cause blood [to be spilled] in your house, lest someone fall from there."

The guardrail must be sturdy and at least ten handbreadths highThe Torah also considers one responsible for safeguarding one's own health and wellbeing. As the verse states3: "But beware and watch yourself [lit. your soul] very well." In connection to this, we present a collection of laws pertaining to guarding the life and health of oneself and others:


  • It is a Torah obligation to build a guardrail around one's roof4 lest someone fall off the roof and get hurt or die.5 This guardrail is called a ma'akeh.
  • The guardrail must be sturdy and at least ten handbreadths, or approximately three feet, high.6
  • There is no requirement to build a guardrail on a roof that is not used by people.7
  • When erecting a ma'akeh, one should recite the following blessing: Ba-ruch a-tah ado-nai e-lo-hei-nu melech ha-olam, a-sher kid-e-sha-nu be-mitz-vo-tav vetzi-va-nu la-asot ma-akeh. ("Blessed are You, Lord our G‑d, King of the Universe, who has sanctified us with His commandments, and commanded us to construct a parapet.") One who is erecting the ma'akeh for someone else should conclude the blessing: al asiyat ma-akeh ("...commanded us concerning the construction of a parapet"). 8
  • Included in this Torah obligation is the obligation to build a proper, sturdy fence around a ditch that is on one's property, even if that ditch has water in it.9 This obviously includes a swimming pool. Alternately, one may cover the ditch or pool.10 However, one does not recite a blessing when covering a pool or erecting a fence around it.11

Other Precautions

  • A father is obligated to teach his children how to swim.12
  • One may not wade through rushing waters that are higher than one's waist.13
  • It is forbidden to drive a vehicle at a dangerous speed.14
  • One may not drink from a river without first drawing the water and inspecting it for leeches.15
  • One may not go on a dangerously unstable bridge or walk under a shaky ladder.16
  • One may not own a dangerous dog. A dog is also considered dangerous if its bark frightens people.17 Although some are lenient regarding this injunction, a G‑d fearing person should be not be.
    If one must own a dangerous dog, he must keep it chained up, in a manner which renders the dog incapable of harming people.
  • One may not own a dangerous dog. A dog is also considered dangerous if its bark frightens people...One may not slice bread, meat, or other items on the palm of one's hand,18 as one may accidentally cut one's hand.
  • Notifying a child that he will be punished in the future might agitate the child and cause him to harm himself. Rather, if it is necessary to punish a child, the punishment should be carried out immediately.19
  • Since smoking is now recognized as a health hazard, many contemporary halachic authorities are of the opinion that it is forbidden to smoke today. Others are of the opinion that although it is proper not to smoke, it is not strictly forbidden, especially if one is already addicted.20
    According to all opinions, however, one may demand that a person who is smoking should leave the room so as not to cause damage to others.

In addition to all of the above, there are other things – not mentioned here – which the Sages banned because they are spiritually harmful.


Ibid. 4:9.
The plain meaning of the verse is to be careful not to forget the day of the giving of the Torah. But our Rabbis interpreted it to also mean that one must guard one's health. See Talmud Berachot 32b, and the Maharsha there.


One who does not put a guardrail on his roof (or a fence around his swimming pool) actually transgresses two commandments: a) The positive commandment to build a ma'akeh. b) The negative commandment to not cause death to others (Alter Rebbe's Shulchan Aruch, Laws of Guarding One's Body and Soul & Not Wasting 4).


Deut. 22:8; Code of Jewish Law, Choshen Mishpat 427:1.


Maimonides, Laws of a Murderer & Guarding One's Life 11:3; Alter Rebbe's Shulchan Aruch, Ibid. 2.


Ibid. 1.


Maimonides, Laws of Blessings 11:12-13; Rabbi Akiva Eiger on Code of Jewish Law, ibid.


Ibid. 3.




Chayei Adam 16:24.


Talmud, Kiddushin 29a.


Talmud, Yoma, 87b; Alter Rebbe's Shulchan Aruch, ibid. 11.


Responsa of Shevet Halevi, 6:112.


Talmud, Avodah Zarah, 12b; Alter Rebbe's Shulchan Aruch, ibid. 4.


Talmud, Rosh Hashana, 16b; Alter Rebbe's Shulchan Aruch, ibid. 6.


Talmud, Bava Kama, 83a; Alter Rebbe's Shulchan Aruch, ibid. 3.


Talmud, Berachot 8a; Alter Rebbe's Shulchan Aruch, ibid. 11.


Masechet Semachot 2:4-6.


See the Encyclopedia for Halacha and Medicine by Dr. Avrohom Steinberg, 1996, "Smoking," for the various opinions on this matter.

Rabbi Aryeh Citron was educated in Chabad yeshivahs in Los Angeles, New York, Israel and Australia. He was the Rosh Kollel of The Shul of Bal Harbour, Florida, and is now an adult Torah teacher in Surfside, Florida. He teaches classes on Talmud, Chassidism, Jewish history and contemporary Jewish law.
© Copyright, all rights reserved. If you enjoyed this article, we encourage you to distribute it further, provided that you comply with's copyright policy.
Join the Discussion
Sort By:
1000 characters remaining
Aryeh Citron Surfside, fl July 12, 2010

Mental and Emotional Health It would seem to me that just as the Torah mandates that one guard their physical health, so too, must one guard their mental and emotional health. These are not less important than physical health. Quite the opposite.

This means that one should not do anything which puts these in danger. E.g. If one is in a stressful situation which may cause them damage to their long term mental and or emotional health, they should see to extricate themselves from this situation as soon as possible. Reply

Aryeh Citron Surfside, Fl July 11, 2010

The Previous Lubavitcher Rebbe The Previous Lubavitcher Rebbe was originally a heavy smoker. When the data came out that smoking was dangerous to ones health, he stopped cold turkey. As did his son-in-law who became the Rebbe after him. Reply

Anonymous NC, USA July 10, 2010

Mental Health Great article, THANK YOU.

Are there any specific laws for protecting one's mental or emotional health?

A follow-up related to laws to protect us from actions that are spiritually harmful would also be appreciated.

Your response would be appreciated. Reply

Anonymous Chicago, IL July 8, 2010

Smoking Wasn't the Previous Rebbe a heavy smoker? Reply

Aryeh Citron Surfside, Fl July 5, 2010

Prayers If one is unwell, an appropriate prayer is the daily Amidah which includes a blessing for healing (the eighth blessing). In addition, Psalms 20, 103, 107 and various others are recommended.
As far as a prayer for general health, the blessing of "Asher Yatzar" (recited in the morning and after using the bathroom) comes to mind. Reply

Yehudah San Diego, CA via July 5, 2010

Health Are there certain prayers that improve one's health? If so please tell me what they are.

Thanks! Reply