Matteo 5:9

A third positive Christian virtue, reflecting the perfection of Christ Himself: Blessed are the peacemakers; for they shall be called the children of God.

The disciples of Jesus are children of peace: they not merely have peace in their own souls through purity, they are not merely peace-loving, but they are active, strenuous promoters of peace in the midst of a world torn asunder by hatred, party interest, and every form of alienation, Romans 12:18; Psalms 34:15; Mark 9:50; 2 Timothy 2:22; Hebrews 12:14, In using their best offices in the interest of assuaging passions, of settling sectional strife, they prove themselves true children of God, who has only thoughts of peace toward all men.

This is their reward of grace: God is their Father, Christ is their Brother, heaven is their heritage, their home, 1 Peter 3:10-11; Isaiah 57:2.