Charles Spurgeon (2011). “All of Grace (Authentic Original Classic): An urgent Word with Those Who Are Seeking Salvation by the Lord Jesus Christ”, p.52, Destiny Image Publishers
Frederick William Robertson (1873). “ser. 1 God's revelation of heaven [and other sermons]. ser. 2 Christ's judgement respecting inheritance [and other sermons]. ser. 3 The tongue [and other sermons”