As Jewish communities prepare to transition from Yom Kippur to Sukkot this week, reflections on the nature of time, life, and impermanence have gained renewed poignancy. Drawing on the teachings of the late Rabbi Lord Jonathan Sacks, these themes highlight how the Hebrew calendar’s observances encourage a deeper engagement with how individuals use their limited time.

Yom Kippur, observed this year leading into Sukkot, centers on themes of repentance and the plea for life. It is a day devoted to intense prayer, during which worshippers seek to be inscribed in the “Book of Life.” The rabbi and physician behind recent commentary on the period emphasized the fleeting nature of human existence, noting that even a long life is but a moment in the vast timeline of the universe. This underscores the uniquely precious value of time, which cannot be regained, unlike money, possessions, or relationships.

The subsequent festival of Sukkot, beginning this Friday, extends these reflections by inviting observers to dwell in temporary structures called sukkahs. Unlike permanent homes, sukkahs are built with natural materials and open roofs, making the impermanence of shelter tangible. This ritual starkly contrasts with the human drive to establish security through long-term investments, property, and plans for the future.

Sukkot’s emphasis on impermanence is also linked with joy, presenting a paradox that awareness of life’s transience can intensify appreciation and gratitude for present moments. This sentiment encourages individuals to seize opportunities to deepen relationships, perform acts of kindness, and prioritize values over material concerns.

The commentary suggests that while Yom Kippur is a day for seeking another year of life, Sukkot poses a compelling challenge: to live a life worthy of the gift received. The need to act meaningfully—to offer charity, comfort, education, and justice—resonates as a central Jewish ethical imperative. Recognizing that time is finite, the message urges moving beyond passive existence to purposeful engagement with the world.

This transition between festivals serves as an annual reminder of humanity’s vulnerability and the enduring impact of individual choices. As worshippers enter the sukkah this week, the fragile roof framing the sky invites contemplation of mortality alongside hope. Ultimately, the spiritual journey from Yom Kippur to Sukkot confronts believers with a fundamental question: How will you use the time you have been granted?