NET
23 They were only hearing, “The one who once persecuted us is now proclaiming the good news of the faith he once tried to destroy.”
Darby
23 only they were hearing that he who persecuted us formerly now announces the glad tidings of the faith which formerly he ravaged:
KJV
23 But they had heard only, That he which persecuted us in times past now preacheth the faith which once he destroyed.