Religious leaders across the country this week vowed to mobilize their congregants to push for gun control legislation and provide the ground support for politicians willing to take on the gun lobby, saying the time has come for action beyond praying and comforting the families of those killed.

A group of clergy members, representing mainline and evangelical Protestants, Catholics, Jews and Muslims, plans to lead off the campaign in front of the Washington National Cathedral at an event on Friday timed to mark the moment a week before when a young gunman opened fire in a school in Newtown, Conn.