Tree of Life Messianic Congregation at Grossmont Center in La Mesa has practiced Messianic Jewish worship since its founding in 1986, making it one of San Diego County's longest-operating Messianic communities. Shabbat services on Saturday mornings feature Hebrew liturgy and worship rooted in both the Torah and the New Testament, with congregational fellowship meals for holidays and festivals catered through area providers such as J-K's Greek Cafe. The congregation relocated to Grossmont Center in October 2020, converting a former restaurant space on Grossmont Center Drive into a Messianic worship hall near Chuze Fitness La Mesa. An IAMCS (International Alliance of Messianic Congregations and Synagogues) member, Tree of Life maintains a sister-congregation relationship with Kehilat Ariel in Clairemont and participates in La Mesa's wider interfaith landscape alongside congregations such as Shepherd of the Valley Lutheran Church. The congregation observes the full cycle of biblical festivals—Yom Teruah, Sukkot, Pesach—and conducts an annual Tashlich casting ceremony at Lake Murray, connecting its liturgical calendar to La Mesa's outdoor landmarks. Tuesday-evening Torah study sessions follow an exegetical format covering the Pastoral Epistles, while Shabbat sermons cycle through the Torah, Prophets, and Writings in a multi-year lectionary rotation grounded in Messianic Jewish hermeneutics.