Abraham the Shield - Torah Reserved for the Upright in Tanchuma

Another interpretation: AFTER THESE THINGS (Genesis 15:1). This is what Scripture says: "He reserves sound wisdom for the upright" (Proverbs 2:7). [What is the meaning of "He reserves sound wisdom for the upright"?] Rather, before the world was created, the Holy One, blessed be He, reserved the Torah for Abraham, as it is said, "Because Abraham obeyed My voice" (Genesis 26:5). This teaches that Abraham kept all the commandments and all the Torahs. Rabbi Samuel bar Nahmani said in the name of Rabbi Jonathan: Our father Abraham even observed the law of the mingling of cooked foods (eruv tavshilin), as it is said, "Because Abraham obeyed My voice" (Genesis 26:5). Therefore Solomon said, "He reserves sound wisdom for the upright, [a shield to those who walk in integrity]" (Proverbs 2:7). The Holy One, blessed be He, said to Abraham: You have occupied yourself with My Torah; by your life, I am a shield for you, as it is said, "Fear not, Abram, [I am a shield to you]" (Genesis 15:1). Just as when a man grasps the shield, even if arrows and stones are hurled at him he has no fear, [so I do for you], as it is said, "I am a shield to you; your reward shall be exceedingly great" (Genesis 15:1) - not for you alone, but even for your children, if they will occupy themselves with My Torah just as you have occupied yourself, as it is said, "[Every] word of God is pure; He is a shield to those who take refuge in Him" (Proverbs 30:5). Therefore it is said, "He reserves sound wisdom for the upright, [a shield to those who walk in integrity]" (Proverbs 2:7).