NET
22 But you know his qualifications, that like a son working with his father, he served with me in advancing the gospel.
Darby
22 But ye know the proof of him, that, as a child a father, he has served with me in the work of the glad tidings.
KJV
22 But ye know the proof of him, that, as a son with the father, he hath served with me in the gospel.