Midrash su Isaia 47:8

Another interpretation (of Gen. 27:1): AND HE SAID UNTO HIM (Esau): MY SON; AND HE SAID UNTO HIM: HERE I AM. Solomon proclaimed (in Prov. 26:23): SILVER DROSS LAID OVER EARTHENWARE ARE BURNING LIPS AND AN EVIL HEART. To what was Esau comparable? To a caldron³¹Gk.: miliarion; Lat.: miliarium. with an outside of gold inlaid with pearls but an inside of earthenware. [Thus did Esau say to his father: HERE I AM, while in his heart he was saying: When will he die?] Thus it is stated (in Gen. 27:41): AND ESAU SAID IN HIS HEART: LET THE DAYS OF MOURNING FOR MY FATHER COME, AND I WILL KILL MY BROTHER JACOB. Ergo (in Prov. 26:23): SILVER DROSS LAID OVER EARTHENWARE…. And so you find that the seed of [Esau], Haman, said in his heart (in Esth. 6:6): NOW HAMAN SAID IN HIS HEART. (Is. 14:13f.:) THE FOOL HAS SAID IN HIS HEART: < THERE IS NO GOD >. (Is. 14:13:) AND YOU SAID IN YOUR HEART: I WILL ASCEND TO THE HEAVENS…. < I WILL BE LIKE THE MOST HIGH >. (Ezek. 38:10:) IT SHALL COME TO PASS IN THAT DAY THAT THOUGHTS SHALL COME UPON YOUR HEART, < AND YOU WILL DEVISE AN EVIL DESIGN >. (Ps. 10:11:) HE HAS SAID IN HIS HEART: GOD HAS FORGOTTEN. (Is. 47:8:) AND NOW {PLEASE} HEAR [THIS], {YOU} ELEGANT WOMAN WHO DWELLS IN SECURITY, WHO SAYS IN HER HEART: [I AM, AND THERE IS NO ONE ELSE]. Ergo (in Prov. 26:25): FOR THERE ARE SEVEN ABOMINATIONS IN HIS HEART; and Solomon proclaimed (in Prov. 26:23): SILVER DROSS < LAID OVER EARTHENWARE ARE BURNING LIPS AND AN EVIL HEART >.

We are taught: "Blank parchment and also the Sadducean books should not be saved from a fire [on the Sabbath]. R. Jose said: 'On the week days the Holy names should be taken out and preserved and the rest left to be burnt.' R. Tarphon said: 'May I burn my children, if I would not burn such books together with the Holy names they contain, should I obtain possession of them; for even when a man is pursued by a murderer intent upon killing him, or followed by a snake aiming to bite him, he should rather seek for refuge in a temple of idols than to enter the home of a Sadducee; for these [the heathens] serve their idols, unaware of God, while the Sadducees, however, know God, but deny Him; and concerning them, Scripture says (Is. 47, 8.) And behind the door and the door-post hast thou placed thy (mark of) remembrance R. Ishmael said to R. Tarphon: 'We may learn this from the inference drawn from the minor to the major; if, for the sake of bringing about peace between a man and his wife, the Torah says that the Holy name which was inscribed with sanctification may be erased with the (bitter) water, how much more then shall it be permitted that these books of the Sadducees which cause discord and enmity between Israel and their Heavenly Father, be eradicated or destroyed? Concerning them David said (Ps. 139, 21.) Behold, those that hate Thee, I ever hate, etc., with the utmost hatred, etc. And just as they should not be saved from a fire, so also should they not be saved from either a ruinous heap, or water, or from any other thing that may destroy them.' "