Charles Ellicott Commentary Genesis 24:64

"And Rebekah lifted up her eyes, and when she saw Isaac, she alighted from the camel." — Genesis 24:64 (ASV)

She lighted off. — Hebrew, fell: descended hastily from her camel. It is still the custom in the East for an inferior when meeting a superior to dismount, and advance on foot. Rebekah, therefore, would have been thought bold and disrespectful had she not acknowledged the superiority of her lord. Besides beauty, we have already seen in her kindliness of heart, activity, and courageous submission to the guidance of Providence; we now see her modesty and courtesy towards her husband.