AND Simeon blessed them, and said unto Mary his mother, Behold, this child is set for the fall and rising again of many in Israel; and for a sign which shall be spoken against; (Yea, a sword shall pierce through thy own soul also,) that the thoughts of many hearts may be revealed.
O PANAGIA, our Lady, a sword passed through thy heart, as Simeon said, when thou sawest the one who shone forth from thee hanging, at the hands of the lawless, upon a Cross like a condemned man, drinking wine and gall, thrust in through the side, nailed through the hands and feet; and with a mother’s grief thou didst cry and cry with a loud voice, “What is this new mystery, O my sweetest child?”
At Vespers for October 19. Source.
BUT we speak the wisdom of God in a mystery, even the hidden wisdom, which God ordained before the world unto our glory: Which none of the princes of this world knew: for had they known it, they would not have crucified the Lord of glory.
But as it is written, Eye hath not seen, nor ear heard, neither have entered into the heart of man, the things which God hath prepared for them that love him.
1 Corinthians 2:7-9
LORD, now lettest thou thy servant depart in peace,
according to thy word:
For mine eyes have seen thy salvation,
Which thou hast prepared before the face of all people;
A light to lighten the Gentiles,
and the glory of thy people Israel.