NET
19 Have you been thinking all this time that we have been defending ourselves to you? We are speaking in Christ before God, and everything we do, dear friends, is to build you up.
Darby
19 Ye have long been supposing that we excuse ourselves to you: we speak before God in Christ; and all things, beloved, for your building up.
KJV
19 Again, think ye that we excuse ourselves unto you? we speak before God in Christ: but [we do] all things, dearly beloved, for your edifying.