A Serious Call to a Devout and Holy Life - Paperbackby William Law (Author) Written by William Law in 1728, A Serious Call to a Devout and Holy Life was a powerful work of its time, greatly influencing radical religious leaders including Charles Wesley, a leader of the Methodists, and Henry Venn, a founder of the evangelical Clapham Sect of Anglicans. In A Serious Call, Law argues that devotion must be an omnipresent fixture in every Christian's life. One cannot affect devotion during times of prayer