Between a Rock and a Hard Place

Parashat Haazinu includes the word tzur, or rock, eight times. But in this case, tzur isn't referring to just any rock; it's referring to God, as the rock of Israel. Sometimes, a rock can have a positive connotation, like our friends that are always there for us. But other times, it can signify something that's cold, unfeeling, and unbending. What can be understood about these conflicting implications of a rock when we're talking about God and the High Holidays? Rabbi Rick Jacobs, president of the Union for Reform Judaism, discusses Parashat Haazinu, and tzur yisrael, God as the rock of Israel.