'Complaint' in the Bible

Now about this time, when the number of disciples was increasing, a complaint was made by the Hellenists (Greek-speaking Jews) against the [native] Hebrews, because their widows were being overlooked in the daily serving of food.

After Paul had been summoned, Tertullus began the complaint [against him], saying to the governor:“Since through you we have attained great peace, and since by your foresight reforms are being carried out for this nation,

Does any one of you, when he has a complaint (civil dispute) with another [believer], dare to go to law before unrighteous men (non-believers) instead of [placing the issue] before the saints (God’s people)?

bearing graciously with one another, and willingly forgiving each other if one has a cause for complaint against another; just as the Lord has forgiven you, so should you forgive.