Sforno on Exodus 6:13/ספורנו על שמות ו׳:י״ג

1ויצום, He appointed them as ministers. We find something parallel in Numbers 27,23 when ויצוהו means that Moses appointed Joshua as his successor with the same authority as he had possessed during the previous 40 years. Also in Samuel I 25,30 the words וצוך לנגיד, refer to David being appointed the supreme authority over the Jewish people. There are more similar examples in Scripture.

2אל בני ישראל, the same as על בני ישראל, “over the Children of Israel,” i.e. to be in charge of them. Compare Ezekiel 18,6 אל ההרים לא אכל which means: “he did not eat on the mountains.”

3ואל פרעה מלך מצרים להוציא, as well as in charge of Pharaoh the King of Egypt, for the purpose of leading the Jews out, etc.. Concerning this topic both Pharaoh and the people of Israel were placed under the direction of Moses and Aaron.