Midrash sobre Exodo 12:49

You find that anyone who observes the commandments meticulously is rewarded fully. For example, because Abraham observed the commandments meticulously, he was called the beloved of the Holy One, blessed be He, as it is said: The seed of Abraham, My beloved (Isa. 41:8). R. Samuel the son of Nahmani quoted R. Jonathan as saying that in Abraham’s home, even the commandment prohibiting the preparation of the Sabbath meals on a holy day that occurred on a Friday was carefully observed,²A dish prepared on Thursday is allowed to lay over until eaten on the Sabbath. By this legal fiction all the cooking for the Sabbath performed on a Friday that is a holy day is considered a continuation of the preparations started on Thursday. as it is said: Because that Abraham hearkened to My voice, and kept My charge, My commandments, My statutes, and My laws (Gen. 26:5). Are there a variety of laws that Scripture should say My laws? Has it not already been stated: One law shall be to him that is home born, and to the stranger that sojourns among you (Exod. 12:49), and was it not previously written: One law and one ordinance (Num. 15:16)? The word My laws employed in the above verse refers (solely) to the minutiae of the law which Abraham observed meticulously. The Holy One, blessed be He, said to him: Though you do observe My laws scrupulously, yet you dwell amongst idolaters; Get thee out of thy country.