The detail above of Simeon and Anna recognizing the savior is from a larger work by the 14th century artist Lorenzetti Ambrogio. You can see the complete work right here.
This day is also known as Candlemas. It commemorates the occasion when St. Simeon recited the Nunc Dimittis. I'm offering you a translation in English and the truly ethereal setting by Rachmaninoff:
Lord, now Thou lettest Thy servant depart,
According to Thy word, in peace.
For mine eyes have seen Thy salvation
Thou has prepared before the face of all people,
A Light to illuminate the Gentiles
And the glory of Thy people Israel.