Sforno on Deuteronomy 30:2/ספורנו על דברים ל׳:ב׳

1ושבת עד ה' אלוקיך, your repentance will have as its exclusive purpose to henceforth carry out only G’d ‘s will to the extent that He has revealed it. Our sages in Yuma 86 have said of this type of repentance that “it reaches right up to the throne of G’d’s Majesty.”

2ושמעת בקולו ככל אשר אנכי מצוך היום, instead of listening (abiding by) man-made laws as you were in the habit of doing.

3אתה ובניך, also the children of this generation will recognise this. Jeremiah 31,33 refers to “everyone knowing Me,” i.e. G’d, adding למקטנם ועד גדולם, “from their early youth till their reaching adulthood.”

4בכל לבבך, without any reservation.

5ובכל נפשך, without allowing the “natural,” evil urge inspired temptations to sidetrack you by downplaying the importance of some of G’d’s legislation