Ramban on Genesis 24:61/רמב"ן על בראשית כ״ד:ס״א

1AND REBEKAH AROSE, AND HER MAIDS. Scripture relates that after they gave permission for Rebekah and her nurse to go, as well as for Abraham’s servant and his men, Rebekah rose and called her maids. And they rode upon the camels, and followed the man because he led them on the way.

2AND THE SERVANT TOOK REBEKAH, AND WENT HIS WAY. The purpose of this is to tell of his zealousness for after having left the city with all the women following him, the servant took Rebekah to him and did not part from her in order to guard her against any mishap along the way. And Rabbi Abraham ibn Ezra said that it means that he walked with Rebekah and never felt the weariness of the journey until Isaac came and met him.