The woman in this house is having her 50th birthday. All the world knows she has met Sarah. This is the biblical Sarah, the wife of Abraham. When a man hits 50 he meets indeed, Abraham. In former days both men and woman ‘met Abraham’ but someone in the 1960’s decided women deserved their own gender for the celebration.
The concept is based on the bible verse: John 8:57, NLT: “The people said, ‘You aren’t even fifty years old. How can you say you have seen Abraham?'” as if this explains it. Not. You need to have the verse prior which is: John 8:56, NLT: “Your father Abraham rejoiced as he looked forward to my coming. He saw it and was glad.'” In other words, whomever Jesus was addressing was not impressed because he, Jesus, had not yet reached 50 and so could not have met Abraham and known the prophecy. A bit convoluted for my taste, but there you have it. This was at my neighbor’s door – the cat owner – as a surprise by her daughters. She was delighted.