'Arbiter' in the Bible

May the Lord be our judge and arbiter. May he see and arbitrate my case and deliver me from your hands!"

Nor is there an arbiter between us, who might lay his hand on us both,

who cause a person to be indicted by a word, and lay a snare for the arbiter in the gate, and who deprive the innocent of justice with false testimony.

But He said to him, “Man, who appointed Me a judge or arbitrator over you?”

But as it is, Christ has acquired a [priestly] ministry which is more excellent [than the old Levitical priestly ministry], for He is the Mediator (Arbiter) of a better covenant [uniting God and man], which has been enacted and rests on better promises.