TORONTO — Even before she set foot in Israel, Erin Lehrer knew it was home. That's what her mother told her — though she hadn't been to Israel either — and what she was taught at the Jewish day school she attended in Montreal, Lehrer said. In prayer, she and her family referred to Israel as the homeland. "It was always just: you have to love Israel," said the 34-year-old. "You can question why they do what they do. But you have to, in the way that family does, you have to know they are looking out for you." The...