Moses
Genesis 24:22ESV·traditional attribution

When the camels had finished drinking, the man took a gold ring weighing a half shekel, and two bracelets for her arms weighing ten gold shekels,

John Calvin Reformed @genevareformer

22. The man took a golden ear-ring. His adorning the damsel with precious ornaments is a token of his confidence. For since it is evident by many proofs that he was an honest and careful servant, he would not throw away without discretion the treasures of his master.

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 it came to pass, as the camels had done drinking,.... Having had enough to abate their thirst and satisfy them, by means of Rebekah's drawing water for them: that the man took a golden earring; out of his pocket, or out of a box or parcel that was upon the camels; it is in the margin of our Bibles, "a jewel for the forehead"...