Commento su Deuteronomio 6:7

ושננתם AND THOU SHALT TEACH THEM DILIGENTLY — This word expresses the idea of being sharply impressed, the meaning being, that they should be impressed (familiar) in thy mouth, so that if a person asks you anything concerning them, you will not need to stammer (hesitate) about it, but tell him forthwith (Sifrei Devarim 34:1; Kiddushin 30a)

AND THOU SHALT TEACH THEM DILIGENTLY UNTO THY CHILDREN etc. These clarified commandments have also been alluded to previously, for, since He enjoined in certain commandments, It shall be a perpetual statute throughout your generations;²⁵³Leviticus 3:17 — that ye shall eat neither fat nor blood. It is a sign between Me and the children of Israel forever;²⁵⁴Exodus 31:17. Reference is to the Sabbath. This is My covenant, which ye shall keep, between Me and you and thy seed after thee²⁵⁵Genesis 17:10. Reference is to circumcision. — we are thus [obviously] commanded [to see to it] that our children know the commandments, and how shall they know [the precepts] unless we teach them. Similarly, the commandment And thou shalt bind them for a sign upon thy hand, and they shall be for frontlets between thine eyes²⁵⁶Verse 8. has already been stated²⁵⁷Exodus 13:9. and here he [further] explained and thou shalt bind them meaning that they be placed [upon the arm and head and secured tightly] through tying. It also alludes to the knot [in the strap] of the phylacteries that, according to the tradition received by our Rabbis, is a law declared to Moses on Sinai.²⁵⁸Menachoth 38 b. He added here the commandment of the Mezuzah²⁵⁹See Vol. II, p. 173, Note 437. — And thou shalt write them upon the door-posts of thy house, and upon thy gates²⁶⁰Verse 9. — which is not mentioned there. Perhaps this, too, is [merely] explained [here rather than being an entirely new commandment] since it has been suggested in the commandment, and it be a memorial between thine eyes, that the law of the Eternal may be in thy mouth.²⁶¹Exodus 13:9. And since the Mezuzah is fastened to the upper third of the right-hand door-post, approximately at eye-level, it thus serves as a memorial of the law of G-d, for two portions of the Torah are written on its scroll of parchment. The meaning of the expression and upon thy gates²⁶⁰Verse 9. is “and upon the door-posts of the rest of your gates,” such as the gates of cities and countries, similar to within any of ‘thy gates’²⁶²Further, 17:2. [which means “any of ‘your cities’ “].

Teach them through repetition and through sharp, intellectual evidence.