<sod >The Most Rev Justin Welby and heads of Christian, Jewish, Muslim and Sikh groups have issued a joint letter to every MP ahead of the debate on the assisted dying bill which is due to be debated in the Commons on Friday.< eod>< sod > The Most Rev Justin Welby and heads of Christian, Jewish, Muslim and Sikh groups have issued a joint letter to every MP asking them to oppose the assisted dying bill, which will be debated in the Commons on Thursday.< eod>