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Yetzer hara

Wikipedia's first sentence called it “not a demonic force”. Today it says “term for humankind's congenital inclination to do evil”.
Measured, not asserted. Every count, date and revision on this page was taken from Wikipedia's own history and checked against the live article. The words quoted are theirs.
Machine-checked against the full current article on 2026-08-03.
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The opening as it read in 2025

The concept is prominent in rabbinic texts and in the works of the Syriac poet Narsai . The term itself is drawn from the phrase "the inclination of the heart of man is evil" ( Biblical Hebrew : יֵצֶר לֵב הָאָדָם רַע , romanized: yêṣer lêḇ hā-ʾāḏām raʿ ), which occurs twice at the beginning of the Torah ( Genesis 6 :5 and Genesis 8:21). The Hebrew word yetzer having appeared twice in Genesis occurs again at the end of the Torah: "I knew their devisings that they do". Thus from beginning to end the heart's yetzer (plan) is continually bent on evil. However, the Torah which began with blessing anticipates future blessing which will come as a result of God circumcising the heart in the latter days. In traditional Judaism, yetzer hara is not a demonic force; despite this, Samael is considered the source of the yetzer hara , through man's misuse of things the physical body needs to survive. Thus, the need for food becomes gluttony due to the yetzer hara . The need for procreation becomes promiscuity, and so on. The Jewish concept of the yetzer hara is similar to the Christian notion of "fallenness" or a corrupted human nature, known in the Augustinian tradition as concupiscence , humanity's alienation from God and the image of God in oneself and others, resulting in spiritual ignorance and rebellion, the progressive loss of divine likeness, and a tendency to entertain evil thoughts and commit evil acts. However, the genesis of concupiscence is original or ancestral sin , whereas the yetzer hara is a natural aspect of God's creation. Also, in Judaism each person is said to also possess a yetzer hatov (good inclination) which balances the evil inclination. According to the Talmudic tractate Avot de-Rabbi Natan , a boy's evil inclination is greater than his good inclination until he turns 13 ( bar mitzvah ), at which point the good inclination is "born" and able to control his behavior. Moreover, the rabbis have stated: "The greater the man, the greater his [evil] inclination." Becker, Adam H.

This is Wikipedia's own text, saved in our repository. Their copy of it is revision 1286798271.
Today
Wikipedia's first sentence called it “not a demonic force”. Today it says “term for humankind's congenital inclination to do evil”. Read the current article and compare.
201020152020Oct '232025
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What Wikipedia says this is

Every article opens by defining its subject. This one was redefined since 2010, and today's defining sentence is their current revision.

Then

not a demonic force

Now

term for humankind's congenital inclination to do evil

Struck red text is no longer in the article; dotted amber text was rewritten. Every revision id links to Wikipedia's copy; the text shown is our own saved copy. Data: /data. Wikipedia text is CC BY-SA; quoted for the record; not affiliated with Wikipedia.

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