For he longed after you all, and was full of heaviness, because that ye had heard that he had been sick.
For - reason for thinking it "necessary to send" Epaphroditus: [Epeidee epipothon en] 'Inasmuch as he was longing (a continuing state) after you all.'
Full of heaviness, х adeemonoon (G85)] - distracted with heavy grief.
Because that ye had heard that he had been sick - rather х eestheneesen (G770)], 'that he was sick.' He felt how saddened you would be in hearing it; he now is hastening to relieve your minds of the anxiety.