For - reason for thinking it “necessary to send” “Epaphroditus. Translate as Greek, “Inasmuch as he was longing after you all.”
full of heaviness - The Greek expresses the being worn out and overpowered with heavy grief.
because that ye had heard that he had been sick - rather, “that he was sick.” He felt how exceedingly saddened you would be in hearing it; and he now is hastening to relieve your minds of the anxiety.