NET
3 And I wrote this very thing to you, so that when I came I would not have sadness from those who ought to make me rejoice, since I am confident in you all that my joy would be yours.
Darby
3 And I have written this very [letter] [to you], that coming I may not have grief from those from whom I ought to have joy; trusting in you all that my joy is [that] of you all.
KJV
3 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.