Chullin 24

On today’s daf, we encounter the following mishnah: 

There is an element with which priests remain fit and Levites are unfit, and there is also an element with which Levites remain fit and priests are unfit.

This has nothing to do with slaughtering animals. Rather, this is one in a series of mishnahs on today’s daf that follow the formula: What renders x fit makes y unfit, and what renders y fit makes x unfit. The link between the mishnahs is not subject, but form. They were probably arranged this way because it makes them easier to memorize.

The Gemara cites a beraita that fills in a few details:

Priests are rendered unfit for Temple service by the blemishes enumerated in the Torah (Leviticus 21:16–23), but remain fit with the passage of years. Levites remain fit for Temple service with the blemishes enumerated in the Torah, but are unfit with the passage of years.

Priests cannot serve in the Temple if they have or develop a blemish. However, they can serve arbitrarily long. Conversely, Levites are not rendered unfit if they become blemished, but their eligibility to serve is time-bound. 

The precise time for which a Levite is eligible to serve is not completely clear as the Torah contains two contradictory verses: Numbers 8:24 says, “From 25 years old and upward,” and Numbers 4:47 says, “From 30 years old and upward.” The Gemara quickly resolves the tension between the verses, however, in a quintessentially talmudic way:

Twenty-five years old is the time for apprenticeship and 30 for service.

This makes sense. Training begins at 25 years, full eligibility at 30. We know from the Torah that levitical service comes to an end at age 50 (Numbers 8:25).

The Gemara continues: 

From here, it is derived that a student who did not see a positive indication in his studies after five years will no longer see a productive result from those studies.

It is possible that this teaching is referring to levitical trainees and lets us know that those who do not successfully acquire the skills and knowledge they need to serve in the Temple during the training period are sent home. Alternatively, and perhaps more likely, it is referring to the rabbis’ students. Just as Levites are given five years to learn the ropes, so too are students of Torah. If, after five years, their learning has not taken root, it is a sign that they should turn their attention to other pursuits.

But wait, you might be thinking, although the obligation to study has no prescribed measure, the Talmud is filled with teachings obligating everyone to make it a part of their daily lives! So why suggest that those who struggle should stop after five years? 

A fine objection, one that can be resolved by utilizing a common rabbinic syllogism: To what are the rabbis referring here? To those who seek entry into the talmudic academies. Certainly, the obligation to study Torah does indeed fall upon everyone and fulfilling it is a lifelong task. But the halls of the rabbinic house of study are not for everyone longterm.

This can be a tough message to hear, running counter to modern cultural messaging that urges us to follow our dreams and assures us there is no limit to what we can achieve. But perhaps we need to temper that unbridled encouragement with realism. Delivered at the proper time, with sensitivity and kindness, “it’s time to move on to something else” might sometimes be the message a person needs to hear.

Read all of Chullin 24 on Sefaria.

This piece originally appeared in a My Jewish Learning Daf Yomi email newsletter sent on May 24, 2026. If you are interested in receiving the newsletter, sign up here.