Martin James Smith is an English vocalist, guitarist, songwriter, and producer, best known as the frontman of the Christian rock and worship band Delirious?. He has been a solo artist since Delirious?' disbandment in 2009.

Kingdom of Comfort is the ninth and final studio album by the British Christian rock band Delirious?, released in the United States on 1 April 2008 and in the United Kingdom on 14 April 2008.