Based on the model of the ancient Celts, David Adam's Power Lines provides contemporary prayers that convert common features of the workday into opportunities for prayer. Power Lines incudes prayers for the various times of the day, as well as for emotional responses to work. Of particular interest is the chapter devoted to those who live and work in cities. A Voice in the Night: Father Almighty, Lord of all,/Hear your loved one when I call.//Jesus all loving, Savior of all,/Hear your loved one when I call.//Spirit all Powerful, guide of all,/Hear your loved one when I call./Trinity all blessed, ruler of all,/Hear your loved one when I call.