Longer Catechism (Orthodox) 24.474

Chapter 24 — Part II — The Beatitudes

Section 474. Q. What is signified by this promise? A. The sublimity both of their office and of their reward. Since in what they do they imitate the only-begotten Son of God, who came upon earth to reconcile fallen man with God's justice, they are for this promised the gracious name of Sons of God, and without doubt a degree of blessedness answering thereto.