After a year of itinerant preaching, Lake relocated to Spokane, WA by July 1914 and began ministering in "The Church of Truth". He started an organization called The Divine Healing Institute and opened what he called "Lake's Divine Healing Rooms". Lake ran the "healing rooms" from 1915 until May 1920, at which time he moved to Portland, Oregon, for a similar ministry that lasted for another five years. He continued to found churches and "healing rooms" down the California coast and eventually to Houston, TX in 1927, before finally returning to Spokane in 1931. Upon his return to Spokane he purchased an old church and began his final church and healing room.