Here are some sermons on 2 Corinthians 4:
Being a Guiding Light to the Lost! by Rev. Ian Brown (Text: 2 Corinthians 4:3,4; Romans 2:19)The Child of Light Walking in Darkness, the Darkness of Trouble and Perplexity, by Pastor Charles Haddon Spurgeon (1834-1892( (Text: 2 Corinthians 4:17; Isaiah 50:10)
Affliction Working Glory, by Prof. Ronald Cammenga (Text: 2 Corinthians 4:17)
William Perkins - A Plain Preacher, by Dr. Sinclair B. Ferguson (Text: 2 Corinthians 4; 2 Timothy ),