I protest by your rejoicing which I have in Christ Jesus our Lord, I die daily. I protest by your rejoicing - Νη την ὑμετεραν καυχησιν· By your exaltation or boasting. Dr. Lightfoot understands this of "the boasting of the Corinthians against the apostle; that he considered himself continually trampled on by them; rejected and exposed to infamy and contempt; but that he took this as a part of the reproach of Christ; and was happy in the prospect of death and a glorious resurrection, when all those troubles and wrongs would terminate for ever." Instead of ὑμετεραν, Your exultation or boasting, ἡμετεραν, Our exultation, is the reading of the Codex Alexandrinus, and several others, with the Ethiopic, Origen, and Theophylact. This will lead to an easier sense: I declare by the exultation which I have in Christ Jesus, as having died for my offenses, and risen again for my justification, that I neither fear sufferings nor death; and am daily ready to be offered up, and feel myself continually exposed to death. But the common reading is probably to be preferred; for your glorying is the same as glorying on your account: I profess by the glorying or exultation which I have on account of your salvation, that I anticipate with pleasure the end of my earthly race.
I die daily - A form of speech for, I am continually exposed to death. The following passages will illustrate this. So Philo, p. 990. Flaccus, who was in continual fear of death, says: καθ' ἑκαστην ἡμεραν, μαλλον δε ὡραν, προαποθνησκω, πολλους θανατους ὑπομενων ανθ' ἑνος του τελευταιου· "Every day, rather every hour, I anticipate death; enduring many deaths before that last one comes." So Libanius, speaking of his own miseries and those of the people of Antioch, Epist. 1320, page 615, says: ετι ζωντες τεθνηκαμεν· "Though living, we are dead." Livy has a similar form of expression to signify continual danger, xxix. 17: Quotidie capitur urbs nostra, quotidie diripitur. "Daily is our city taken, daily is it pillaged."