1)
What is "ba'Yom ha'hu Ye'achel" referring to?
1.
Rashi and Seforno: Refer to 22:29:2:1.
2.
Targum Onkelos and Targum Yonasan: It is a prohibition against eating a Korban Todah after one day (Nosar).
2)
Why does the Pasuk conclude "Ani Hashem!"
1.
Rashi: It is a warning not to treat the matter lightly, 1 since it is Hashem who commanded it.
2.
Seforno: Refer to 22:29:3:1*.
3.
Targum Yonasan: 'I am Hashem who gives good reward to those who keep My commandments and My laws!'
1
Even though it is confined exclusively to thoughts.