All the previous trials that Paul enumerated were temporary, but what follows remained with him always. Internal pressure ( 2 Corinthians 11:28) harassed Paul on top of all the external difficulties that he endured. Specifically, concern for the weak and the moral failures of his converts disturbed Paul ( 2 Corinthians 11:29). [source][source][source]
"And so it should be with every faithful pastor of Christ"s flock: he should lovingly identify himself with those who have been committed to his care, showing himself deeply anxious for their spiritual well-being, compassionate with them in their frailties and temptations, and resisting and resenting every one who seeks to entice them away from the purity of their devotion to Christ. This compassion is not of man: it is the divine compassion of Christ Himself, burning in the heart of His servant, and blazing forth in love to reach and to bind to the one Bridegroom the hearts of those to whom he ministers." [1][source]