What does Genesis 24:45 mean?
Abraham's servant is describing the events around his meeting with Rebekah earlier that day by the spring outside the city. He had asked Abraham's God to allow the woman who offered to water his camels to be the one appointed to marry Abraham's son Isaac (Genesis 24:12–14).Now he reveals that before he had even finished thinking his prayer, "speaking in my heart," Rebekah walked into view with her water jar. After she filled it at the spring, the servant describes what he asked when he approached her: "Please let me drink."
The fact that Rebekah can verify that all happened exactly as the servant described from this moment in the story on will give credibility to the servant's account (Genesis 24:15–19).