Acts 6:1

The Appointment of the First Seven Deacons

6:1 Now in those days, when the disciples were growing in number, a complaint arose on the part of the Greek-speaking Jews against the native Hebraic Jews, because their widows were being overlooked in the daily distribution of food.

Acts 18:14

18:14 But just as Paul was about to speak, Gallio said to the Jews, “If it were a matter of some crime or serious piece of villainy, I would have been justified in accepting the complaint of you Jews,

Acts 19:38

19:38 If then Demetrius and the craftsmen who are with him have a complaint against someone, the courts are open and there are proconsuls; let them bring charges against one another there.