- Welcome to Temple Sinai! We are a warm, dynamic Reform Jewish congregation that welcomes members from all religious backgrounds and all phases of life. Our program, Interfaith Connections, offers programs in a welcoming, safe, and comfortable environment for those interfaith families within our congregation and those unaffiliated who would like to explore Judaism, the Jewish community and intermarriage issues. Programs are offered throughout the year. These programs are partially funded by a grant from the United Jewish Communities of MetroWest.