'Grievance' in the Bible

So if you are presenting your offering at the altar, and while there you remember that your brother has something [such as a grievance or legitimate complaint] against you,

But whenever you stand praying, if you have a grievance against any one, forgive it, so that your Father in Heaven may also forgive you your offences."

So then, if Demetrius and the craftsmen who are with him have a complaint against anyone, the courts are in session and proconsuls are available; let them bring charges against one another there.

If one of you has a grievance against an opponent, does he dare to go to law before irreligious men and not before 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.