How easy is teshuva?[1]
כי המצוה הזאת אשר אנכי מצוך היום לא-נפלאת הוא ממך ולא רחקה הוא וגו’ כי-קרוב אליך הדבר מאד בפיך ובלבבך לעשתו
This mitzvah which I command you today is not beyond you, nor is it far away…Rather the matter is close to you in your mouth and in your heart to perform[2]
Which mitzvah is our verse telling us is close to our mouth and close to our heart to perform? The Ramban explains[3] that it is referring to what was mentioned a few verses[4] earlier. ושבת עד-יקוק אלקיך, you shall[5] return to Hashem, your G-d. The Torah is telling us that the mitzvah of teshuva, sincere repentance for our sins, is very easy. It’s close to our mouths and to our hearts. Meaning, there are four requirements for complete teshuva: cessation of the sin, committing never to do it again, regretting the sin, and vidui, confessing one’s sin[6]. The Torah is alluding to two of these requirements[7]. Teshuva is close to our mouths, to perform vidui, and our hearts, to accept in our hearts never to do this sin again. Why is the Torah alluding to only these two, and not the other two?