Moses
Genesis 21:3BSB·traditional attribution

And Abraham gave the name Isaac to the son Sarah bore to him.

John Calvin Reformed @genevareformer

3. And Abraham called the name . Moses does not mean that Abraham was the inventor of the name; but that he adhered to the name which before had been given by the angel. This act of obedience, however, was worthy of commendation, since he not only ratified the word of God, but also executed his office as God’s minister.

Matthew Henry Presbyterian @wholebiblehenry

Long-looked-for comes at last. The vision concerning the promised seed is for an appointed time, and now, at the end, it speaks, and does not lie; few under the Old Testament were brought into the world with such expectation as Isaac was, not for the sake of any great person eminence at which he was to arrive, but because he was to be, in this...

Commenting on Genesis 21:1-8

John Gill Reformed Baptist @doctorgill

And Abraham called the name of his son that was borne unto him, whom Sarah bare to him, Isaac. Which is the name he was directed to give him, Gen 17:19; and he remembers the order, and is obedient to it; the reason of which name, which signifies laughter, was on account of his laughing for joy at the promise made him, as well as...