2 Corinthians 1:13

Paul seems to have alluded to a criticism of himself here too. Evidently some were saying that to understand Paul’s letters to them, his readers had to read between the lines. They implied he really intended something other than what he had written, or he was being deliberately obscure. [Note: Ralph P. Martin, 2 Corinthians, p. 19.] The apostle’s claim here was that what he had intended was self-evident in his correspondence. There were no hidden meanings or messages. Paul wrote some things that were hard to understand (2 Peter 3:15-16), and sometimes he was ironical, but he did not write one thing and mean another.

The second part of this verse probably goes with 2 Corinthians 1:14 rather than 13. Put a semicolon in the middle of 2 Corinthians 1:13 after "understand" and a comma at the end. There was no punctuation in the original Greek text. "The end" refers to the end of the Corinthians’ lives.