The Five Solas identified the distinctive theological positions held by the reformers and continue to serve as distinguishing characteristics of Reformed Theology. Here is a brief description of each, as well as links to additional information. http://reasonabletheology.org/five-solas
Charles Haddon (CH) Spurgeon (19 June 1834 – 31 January 1892) was a British Particular Baptist preacher. Spurgeon remains highly influential among Christians of various denominations, among whom he is known as the "Prince of Preachers". He was a strong figure in the Reformed Baptist tradition. Spurgeon produced powerful sermons of penetrating thought and precise exposition. Many Christians have discovered Spurgeon's messages to be among the best in Christian literature.
A.W. Pink (1886-1952) After Pink's death, his works were republished by the Banner of Truth Trust and reached a much wider audience as a result. Biographer Iain Murray observes of Pink, "the widespread circulation of his writings after his death made him one of the most influential evangelical authors in the second half of the twentieth century." His writing sparked a revival of expository preaching and focused readers' hearts on biblical living.
Martin Luther (10 November 1483 – 18 February 1546) was a German monk, priest, professor of theology and iconic figure of the Protestant Reformation. He strongly disputed the claim that freedom from God's punishment for sin could be purchased with money. He confronted indulgence salesman Johann Tetzel with his Ninety-Five Theses in 1517. His theology challenged the authority and office of the Pope by teaching that the Bible is the only source of divinely revealed knowledge from God.
Dr. SINCLAIR FERGUSON (born 1948) is a Scottish theologian known in Reformed Christian circles for his teaching, writing, and editorial work. He is one of the most-respected Reformed theologians in the world today. He earned his M.A., B.D., and Ph.D. from the University of Aberdeen. He taught systematic theology full-time at Westminster Theological Seminary in Philadelphia for many years and continues to teach there as a visiting professor, and teaching fellow for Ligonier Ministries.