Moses
Genesis 24:21ESV·traditional attribution

The man gazed at her in silence to learn whether the LORD had prospered his journey or not.

John Calvin Reformed @genevareformer

21. And the man, wondering at her, held his peace. This wondering of Abraham’s servant, shows that he had some doubt in his mind. He is silently inquiring within himself, whether God would render his journey prosperous. Has he, then, no confidence concerning that divine direction, of which he had received the sign or pledge?

Matthew Henry Presbyterian @wholebiblehenry

Abraham's servant now begins to make a figure in this story; and, though he is not named, yet much is here recorded to his honour, and for an example to all servants, who shall be honoured if, by faithfully serving God and their masters, they adorn the doctrine of Christ (compare Pro 27:18 with Tit 2:10); for there is no respect of persons with God, Col 3:24, Col 3:25.

Commenting on Genesis 24:10-28

John Gill Reformed Baptist @doctorgill

And the man wondering at her,.... At her affability and courteousness to a stranger; at her humility and condescension to take upon her such a service; at her readiness, diligence, and laboriousness in it; and the quick dispatch she made; and at her expressions and conduct being so exactly agreeable to the token he desired to have; and at the providence of God in bringing...