He went (according to the call) to the island of Berneray off Harris, where he met an elder of the local church (then without a minister), who was so convinced that Campbell was coming that he had already announced the meetings at which Campbell was to preach. After several days of meetings, suddenly the island was gripped with a new awareness of God. After unreliable reports of events on Lewis, he published a booklet, "The Lewis Awakening", as an official account of this revival. In 1958, Campbell was called to become principal of the Faith Mission's Training Home and Bible College in Edinburgh, where he served for a number of years, before retiring. During his retirement, he was a regular preacher at conventions in Great Britain, Ireland, South Africa, the United States and elsewhere, including the Stornoway Convention, which he had founded. He was also a visiting lecturer at colleges, such as Youth With A Mission's School of Evangelism at Lausanne in Switzerland, and died while lecturing there. Campbell was outspoken about two aspects of the work of the Holy Spirit. The first was that, in his view, a true revival was a move of God that affected, not only church members, but the surrounding community in a way that was visible to all parties concerned (work stopping, bars closing, crime ceasing, etc.). The second was the definite and profound experience of the baptism of the Holy Ghost subsequent to conversion. His practice in evangelistic meetings was not to make the usual altar call, but to invite people to come to another room to pray and seek God. In his ministry in Lewis, he sought to transcend denominational boundaries, but this was at times difficult. Duncan Campbell was, before everything else, a man of prayer and almost invariably started the day with a period of prayer and study of the Bible. The story of Duncan Campbell during the Hebridean Revival is told in the 2008 documentary film "Great Christian Revivals". An extract from the film: "Duncan Campbell said, 'Revival is a community saturated with God.' Campbell witnessed first hand the Spirit of God descending upon a community and learned to let the Holy Spirit have His way. In his own words, 'Seventy-five percent (of the people) were gloriously saved before they came near a meeting... the power of God was moving!'"