23 He invites the faithful disciples to cling to the Church more closely and more lovingly. He invites those who have separated from unity to return to the Church after abandoning the old hatreds, rivalries, and prejudices. He invites all the faithful of Christ, old and new, to persevere in the unity of faith and wills. From this unity divine charity and the harmony of human society will flourish.
Source: In Hac Tanta (Vatican.va)