In Judaism, a person who helps to organize the running of a synagogue service; one or more gabai may be involved. Duties include welcoming visitors, ensuring that everyone has a siddur (prayer book), organizing the seating arrangements, and choosing the congregants who will open the ark or read from the Torah. The gabai will also ensure that the wine is present for the
kiddush, a prayer recited over wine before it is shared by the congregation.
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