I wrote as I did so that on my arrival I would not be grieved by those who ought to make me rejoice. I had confidence in all of you, that you would share my joy.
KJV
And I wrote this same unto you, lest, when I came, I should have sorrow from them of whom I ought to rejoice; having confidence in you all, that my joy is [the joy] of you all.
ASV
And I wrote this very thing, lest, when I came, I should have sorrow from them of whom I ought to rejoice; having confidence in you all, that my joy is the joy of you all.