The 100,000 souls that Roberts had prayed for came in; with all denominations benefiting. By January 1906 he was run down and he went to stay with Mr and Mrs Penn-Lewis in Leicester. He had a breakdown for a time and only appeared occasionally in public. In 1907 he devoted himself to prayer. From 1930 until his death in 1951 he lived in Cardiff. He was buried in Moriah Chapel cemetery, Loughor.