Kedoshim honoring and fearing parents

(3) You shall each revere his mother and his father, and keep My sabbaths: I the LORD am your God.

(2) אמו ואביו תיראו EVERYBODY OF YOU SHALL FEAR HIS MOTHER AND HIS FATHER — Here Scripture mentions the mother before the father because it is manifest to Him that the child fears the father more than the mother and therefore by mentioning the mother first Scripture stresses the duty of fearing her. In the case of honoring one's parents, however, Scripture mentions the father before the mother because it is manifest to Him that the child honors the mother more than the father because she endeavors to win him over by kindly words. Therefore by mentioning the father first Scripture emphasizes the duty of honoring him (Kiddushin 30b - Kiddushin 31a).

she persuades him with many statements of encouragement and does not Therefore, in the mitzva of: “Honor your father and your mother” (Exodus 20:11), the Holy One, Blessed be He, preceded the mention of the honor due one’s father before mentioning the honor due one’s mother. The verse emphasizes the duty that does not come naturally. Similarly, it is revealed and known before the One Who spoke and the world came into being that a son fears his father more than his mother, because his father teaches him Torah, Therefore, in the verse: “A man shall fear his mother and his father” (Leviticus 19:3), the Holy One, Blessed be He, preceded the mention of fear of the mother before the mention of fear of the father.