170. He spoke further, "And you shall teach them diligently (Heb. veshinantam) to your children, and shall talk of them..." (Devarim 6:7). "VESHINANTAM" MEANS as in, "Your arrows are sharp (Heb. shenunim)" (Tehilim 45:6). For a man should teach his son words of Torah as a sword which is sharp on its two sides, so as to introduce into him sharpness and the joy of Torah, and his heart shall not be in folly. "And shall talk of them" means that each thing in the Torah has its own way. "And talk of them:" HE ASKS, This verse should have been in the future tense, AND HE ANSWERS, The man himself should conduct himself by them and behave so as not to deviate right or left.
171. "When you sit in your house" (Devarim 6:7), namely conduct himself in his house in the right way, the correct way, so that his household will learn from him. He should deal with them composedly and joyfully, and not cause too much fear in his house. All his actions at home should be composed. "and when you walk by the way" means to be guided by words of Torah. And he should correct himself through them as proper to conduct himself by way of the Torah, which is like Jacob CONDUCTED HIMSELF ON THE WAY IN THREE THINGS, for a present, for prayer and for war. He should pray to his Master, BUT words of Torah are more valuable than prayer.
172. "And when you lie down" (Ibid.) MEANS to conduct himself with fear of his Master, with holiness, with humility, not to be impudent before his Master. "And when you rise up" (Ibid.) means to give praise to his Master who returned his soul. For he is present before his Master with many sins, yet the Holy One, blessed be He, did kindness by him and returned his soul to his body. "And you shall bind them as frontlets between your eyes" (Ibid. 8), has been explained as referring to the dark hand, which is the left hand, WHICH IS DARKER AND WEAKER THAN THE RIGHT. In the book of Agadah it said, 'yadechah (Eng. 'your hand')' means the hand (Heb. yad) of koh, WHICH IS MALCHUT CALLED KOH, as it is written, "Thus (Heb. koh) shall your seed be" (Beresheet 15:5).