Moses
Exodus 2:13ESV·traditional attribution

When he went out the next day, behold, two Hebrews were struggling together. And he said to the man in the wrong, “Why do you strike your companion?”

John Calvin Reformed @genevareformer

13. Behold, two men of the Hebrews. This perseverance shews that Moses was firm and determined in his design of returning to his brethren, and abandoning the Court; and that he had advisedly renounced its splendor, its wealth, and comforts, although he was by no means ignorant of the miseries to which he exposed himself, and how painful and disagreeable, nay, how ignominious a condition awaited him.

Matthew Henry Presbyterian @wholebiblehenry

Moses had now passed the first forty years of his life in the court of Pharaoh, preparing himself for business; and now it was time for him to enter upon action, and, I. He boldly owns and espouses the cause of God's people: When Moses was grown he went out unto his brethren, and looked on their burdens, Exo 2:11.

Commenting on Exodus 2:11-15

John Gill Reformed Baptist @doctorgill

And when he went out the second day,.... The day following: behold, two men of the Hebrews strove together; which the Jewish writers (h) take to be Dathan and Abiram: and he said to him that did the wrong; who was the aggressor, and acted the wicked part in abusing his brother: wherefore smitest thou thy fellow?