'Mutual' in the Bible

That is, that I may be comforted together with you by the mutual faith both of you and me.

since they exhibit proof that a knowledge of the conduct which the Law requires is engraven on their hearts, while their consciences also bear witness to the Law, and their thoughts, as if in mutual discussion, accuse them or perhaps maintain their innocence--

Be devoted to each other with mutual affection. Excel at showing respect for each other.

Owe nothing to any one except mutual love; for he who loves his fellow man has satisfied the demands of Law.

So then, let us pursue [with enthusiasm] the things which make for peace and the building up of one another [things which lead to spiritual growth].

Now may the God who gives endurance and who supplies encouragement grant that you be of the same mind with one another according to Christ Jesus,