Therefore, one cannot give proper honor to Hashem without being able to give honor to his parents. Without this Mitzvah, the first four and the last five cannot be properly observed. Here, the Torah teaches us a very profound lesson - that we should treat our parents equally. We all feel that parents should treat children equally.
Favoritism shown by a parent can lead to serious problems between parent and child.
Likewise, a child is obligated to treat his parents equally. Often children give their mothers greater honor than their fathers and, likewise, they fear their fathers more than their mothers. Mothers are the nurturers who give of themselves often without regard to their personal needs or wants. The Torah therefore juxtaposes their roles - honor your father and fear your mother. Another common feature between these two Mitzvot is their connection to Shabbat.