Moses
Genesis 37:12BSB·traditional attribution

Some time later, Joseph’s brothers had gone to pasture their father’s flocks near Shechem.

John Calvin Reformed @genevareformer

12. And his brethren went. Before Moses treats of the horrible design of fratricide, he describes the journey of Joseph, and amplifies, by many circumstances, the atrocity of the crime. Their brother approaches them in the discharge of a duty, to make a fraternal inquiry after their state. He comes by the command of his father; and obeys it without reluctance, as appears from his answer.

Matthew Henry Presbyterian @wholebiblehenry

Here is, I. The kind visit which Joseph, in obedience to his father's command, made to his brethren, who were feeding the flock at Shechem, many miles off. Some suggest that they went thither on purpose, expecting that Joseph would be sent to see them, and that then they should have an opportunity to do him a mischief.

Commenting on Genesis 37:12-22

John Gill Reformed Baptist @doctorgill

And Israel said unto Joseph,.... After his brethren had been gone some time to Shechem: do not thy brethren feed the flock in Shechem? this question is put, not as ignorant of it, or doubting about it, but to put Joseph in mind of it, and in order to what follows: come, and I will send thee unto them; which is pretty much he should...