These rubies are from a Christmas Vigil sermon by Bernard of Clairvaux.
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Let no one be so indevout, so ungrateful, so irreligious, as to say: This is nothing new; it was heard long ago; Christ was born long ago. I answer: Yes, long ago and before long ago.
No one will be surprised at my words if he remembers that expression of the Prophet, in aeternum et ultra, “for ever and ever,” or “for ever and beyond it.” Christ, then, is born not only before our times, but before all time. ...
That this mysterious Nativity might to some extent be made known, Jesus Christ was born in time, born of flesh, born in flesh, the Word was made flesh.
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Tomorrow, therefore, we shall see the majesty of God, but with us, amongst us, not in Himself. We shall see Majesty in humility, Power in weakness, the God-man. ...
He chose a stable and a manger – yes, a despicable hut, a shed fit only for beasts – that we may know that He it is “Who raises up the poor one from the dunghill” [and] Who said, “Unless you be converted and become as this little child, you shall not enter into the kingdom of heaven.”