Commentators explain that God's statement about taking Israel "from the ends of the earth" is a direct reference to His call of their ancestor, Abraham, from the distant land of Ur of the Chaldees. This historical act serves as the foundation for God's promise. Just as He initiated a relationship by calling Abraham from afar, He reaffirms His commitment to His people, reminding them that their identity is rooted in His sovereign, deliberate choice.