All these people are welcome to stop in at the Midnight Mass at their closest Catholic Church. Consider this an open invitation to any of the Masses on Christmas Day too!
It's time to come home!
Mary, the Mother of God, pray for us.
St. Paul the apostle, pray for us.
Could not say it any better myself, except that everyone is welcome to attend the Liturgy at an Eastern Orthodox Church near them, remember "Orthodoxy Same as it ever was."
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What a wonderful idea.