Sir – The Bishop of Oxford is theologically confused, methinks.

The purpose of Lent is to fast, denying the flesh, which allows one’s spirit to come closer to God, preparing us to celebrate the death and resurrection of Christ; the Bishop’s suggestion of turning off a lightbulb is unlikely to achieve this.

Also, he endorses Tearfund's aim (a Christian development agency) to prevent sub-Saharan Africans from enjoying the benefits of electricity, perpetuating respiratory illnesses caused by smoke from cooking fires, a major cause of fatalities in developing countries.

Ian Caldwell Oxford