Moses
Genesis 16:8BSB·traditional attribution

“Hagar, servant of Sarai,” he said, “where have you come from, and where are you going?” “I am running away from my mistress Sarai,” she replied.

John Calvin Reformed @genevareformer

8. And he said , Hagar , Sarai’s maid . By the use of this epithet, the angel declares, that she still remained a servant, though she had escaped the hands of her mistress; because liberty is not to be obtained by stealth, nor by flight, but by manumission. Moreover, by this expression, God shows that he approves of civil government, and that the violation of it is inexcusable.

Matthew Henry Presbyterian @wholebiblehenry

Here is the first mention we have in scripture of an angel's appearance. Hagar was a type of the law, which was given by the disposition of angels; but the world to come is not put in subjection to them, Heb 2:5. Observe, I. How the angel arrested her in her flight, Heb 2:7.

Commenting on Genesis 16:7-9

John Gill Reformed Baptist @doctorgill

And he said, Hagar, Sarai's maid,.... He calls her by her name, which might surprise her, and describes her by her character and condition, in order to check her pride, and put her in mind of her duty to her mistress; and to suggest to her, that she ought to have been not where she was, but in the house of her mistress, and doing her service: whence camest thou?