'Mutual' in the Bible

Be devoted to one another with mutual love, showing eagerness in honoring one another.

Do not deprive each other, except by mutual agreement for a specified time, so that you may devote yourselves to prayer. Then resume your relationship, so that Satan may not tempt you because of your lack of self-control.

so that there may be no division in the body, but the members may have mutual concern for one another.

And what mutual agreement does the temple of God have with idols? For we are the temple of the living God, just as God said, "I will live in them and will walk among them, and I will be their God, and they will be my people."

You have purified your souls by obeying the truth in order to show sincere mutual love. So love one another earnestly from a pure heart.