Shake your lulavs and palm branches: Maintaining lament while bedazzling the ashes

After Rabbi Matt and Reverend Dan talk about the significance of bedazzling Ash Wednesday and the connections between shaking the Jewish lulav and waving the Christian palm fronds, the interfaith duo discusses the importance of lamentation in our respective faith traditions. If lament is such a large part of our Judeo-Christian life, shouldn't we embrace and practice it more in the face of so much brokenness and chaos? How might our faith and communal life benefit from intentional lamentation in our present context?