Wisdom in the Bible has the same general meaning as the English word "skill." In this context, wisdom indicates proficiency, competence, or adeptness at living in such a way to produce the fruits of righteousness. Notice that this wisdom from above that reflects itself in the conduct of God's children is first pure. It is uncontaminated by any of the myriad aspects of carnal, self-centered human nature. It is not peace sought at the expense of righteousness. Hebrews 12:14 clearly says we are to "pursue peace with all men, and holiness." It is not either/or but both. We all need to avoid needless contentions, yet not to the point of sacrificing the truth, compromising principle, or forsaking duty.
This wisdom is also peaceable and, unlike the attitude of the highly competitive, willing to yield. That is, it is not irascible, contentious, angry, or bigoted—driving the wedges of separation deeper—but rather calming, gentle, and tranquil. The heavenly wisdom will accomplish this through a person, not because he is necessarily mediating, but simply because he is projecting the nature of God.
If we are indeed regenerated by God's Spirit, being at peace and making peace will be the rule in our lives. As to the actual mechanisms that we can use to make peace, room for some differences of opinion certainly exists. There can be no dispute, however, that the vocation of every Christian is to make peace primarily through what he himself is. Secondarily, we must strive to secure the conditions and relationships that will make good will, concord, and cooperation possible instead of hatred, strife, competition, and conflict.
John W. Ritenbaugh
The Beatitudes, Part 7: Blessed Are the Peacemakers