Cyrill of Alexandria
It is important to expand upon what has previously been discussed. Having established that all will come under a single dominion, devoid of any division or conflict, rather thriving in harmony and unity through faith in Christ, the Spirit ultimately needed to instruct those who had been strengthened in faith and embraced Christ—not to stray from peace with those rightfully designated as 'my people' and 'the forgiven.' Given that Israel was once embraced by God, baptized, and yielded to Christ, is it not fitting for those called to brotherhood through the same spirit of adoption to foster unity rather than discord?
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Thus, it is said: you who have been illuminated by faith in Christ and have been bestowed the honor of genuine sonship from God, to your brother once known as 'not my people,' now proclaim, 'my people,' and to your sister previously referred to as 'the unpardoned,' now declare, 'the pardoned.' Indeed, it is essential that the nations come together in alignment with the Lord, summoned by grace for unity, sharing the same aspirations as the Father, and rejoicing in the salvation of the remnant of Israel. Those who were once cast aside due to their significant disobedience have been rendered acceptable and sanctified in Christ. To Him, and along with Him, be glory to God the Father, through the Holy Spirit, forever and ever. Amen.