Luke 1:29

And when she saw him, she was troubled at his saying, and cast in her mind what manner of salutation this should be.

The greeting that left her troubled came when an angel visited Mary at Nazareth to announce the birth of Jesus. She pondered the saying inwardly, weighing what manner of salutation had been addressed to her. She treasured that announcement in memory and recalled it as evidence that Jesus was the Messiah.