NET
9 For this reason also I wrote you: to test you to see if you are obedient in everything.
Darby
9 For to this end also I have written, that I might know, by putting you to the test, if as to everything ye are obedient.
KJV
9 For to this end also did I write, that I might know the proof of you, whether ye be obedient in all things.