68 We therefore beg and implore Christ Our Mediator and Advocate with the Father (62) to give all Christians the grace to recognize those marks by which His true Church is distinguished from all others, and to become its devoted sons. May God in His infinite kindness hasten the dawn of that long-awaited day of joyful, universal reconciliation. Then will all Christ's redeemed, united in a single family, join in praising the divine Mercy, singing in joyous harmony those words of the psalmist of old: "Behold, how good and how pleasant it is for brethren to dwell together in unity". (63)
Source: Aeterna Dei Sapientia (Vatican.va)