Theodore Austin-Sparks (1888–1971) was a British evangelist and author. Born in London, he became a Christian at seventeen while listening to street-preachers in Glasgow, and was ordained a Baptist minister at twenty-four. In 1926 he left the denomination and, with like-minded Christians, founded a conference and training centre at Honor Oak in south-east London. From there he published the free magazine "A Witness and A Testimony" until his death, and his conference ministry took him across Europe, North America and Asia. He asked that his messages be shared freely and word for word. Source: Wikipedia (summarized; CC BY-SA)
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In “The Gospel of the Kingdom,” Austin-Sparks reads the Kingdom as God’s sovereign rule, revealed in Jesus Christ and worked out through proclamation, the Church, and the lives of believers. Opening with Matthew 24:14, he follows the theme through Matthew’s parables and teaching, calling readers to seek God’s rule first, find rest under it, and herald the good news of Christ’s kingship. First published in "A Witness and A Testimony" magazines, Jan-Oct 1961, Volumes 39-1 - 39-5.