The Pew Report’s finding seven years ago, that 72% of non-Orthodox Jews were intermarrying, rocked the Jewish world. The report did not explain why interfaith couples are relatively less Jewishly engaged by traditional measures, but it did provide one clue: While 89% of intermarried Jews were proud to be Jewish, only 59% had a strong sense of belonging to the Jewish people. It is common sense that when people are made to feel like outsiders, they won’t have a sense of group belonging. But now, as 2020 ends, that common sense is supported by research. Opinion | Our continued rejection of interfaith families hurts everyone