Charles Ellicott Commentary 2 Corinthians 6:11

"Our mouth is open unto you, O Corinthians, our heart is enlarged." — 2 Corinthians 6:11 (ASV)

O you Corinthians.—There was clearly a pause here as the letter was dictated. The rush of thoughts had reached its highest point. He rests, and feels almost as if some apology were needed for so intense an expression of emotion. And now he writes as if personally pleading with them. Nowhere else in the whole range of his Epistles do we find any parallel to this form of speech—this “O you Corinthians.” He has to tell them that he speaks out of the fullness of his heart, that if his mouth has been opened with an unusual freedom, it is because his heart has felt a more than common expansion.