‘I will show him how many things he must suffer for my name’s sake’ (Acts 9:16). The former persecutor was now to be among the persecuted. In this case, his ‘rejoicing’, though the suffering itself was far from pleasant, arose from the fact that it was a guarantee that Paul’s ministry was authentic. How did the new teachers in Colosse compare in this regard? Certainly when Paul measured himself against his rivals in Corinth he challenged them to prove their genuineness by asking whether they had