4 Maccabees 13:22-27

22 and they grow stronger from this common nurture and daily companionship, and from both general education and our discipline in the law of God.
23 Therefore, when sympathy and brotherly affection had been so established, the brothers were the more sympathetic to one another.
24 Since they had been educated by the same law and trained in the same virtues and brought up in right living, they loved one another all the more.
25 A common zeal for nobility strengthened their goodwill toward one another, and their concord,
26 because they could make their brotherly love more fervent with the aid of their religion.
27 But although nature and companionship and virtuous habits had augmented the affection of family ties, those who were left endured for the sake of religion, while watching their brothers being maltreated and tortured to death.
New Revised Standard Version Bible, copyright 1989, Division of Christian Education of the National Council of the Churches of Christ in the United States of America. Used by permission. All rights reserved.