Thomas Watson, R. Armstrong (1816). “The Christian Soldier: Or, Heaven Taken by Storm, Shewing the Holy Violence a Christian is to Put Forth in the Pursuit After Glory. To which is Added: The Happiness of Drawing Near to God, and The Saint's Desire to be with Christ”, p.25
Charles Haddon Spurgeon (1988). “Spurgeon at His Best: Over 2200 Striking Quotations from the World's Most Exhaustive and Widely-read Sermon Series”, Baker Publishing Group
Charles Haddon Spurgeon (1988). “Spurgeon at His Best: Over 2200 Striking Quotations from the World's Most Exhaustive and Widely-read Sermon Series”, Baker Publishing Group