Yeremyah 17:5-8, "This is what Yahweh says: Cursed is the man who trusts in man, who makes flesh his arm; strength, and whose heart departs from Yahweh. For he will be like a bush in the desert, and will not see success when it comes, but will inhabit the parched places in the wilderness; a salt land not inhabited! Blessed is the man who trusts in Yahweh, and whose hope is Yahweh. For he will be like a tree planted by the waters, which spreads out its roots by the river, and will not fear when heat comes. Its leaves are always green; it will not be worried in the year of drought, and never ceases to yield fruit."
Problem is:
Deuteronomy 30:11-13, "For this Law which I command you this day is not hidden from you, nor is it beyond your reach. It is not up in heaven, so that you have to ask; Who will ascend up into heaven for us, and bring it to us, so that we may hear it and then do it? Nor is it beyond the sea, so that you have to ask; Who will cross the sea, and bring it to us, so that we may hear it and then do it?"
After Midrashic interpretation is applied, they come out with : "‘It is not in heaven.’4 What did he mean by this? — Said R. Jeremiah: That the Torah had already been given at Mount Sinai; we pay no attention to a Heavenly Voice" (Baba Metzia 59b)
Talmud - Mas. Baba Metzia 59b
We learnt elsewhere: If he cut it into separate tiles, placing sand between each tile: R. Eliezer declared it clean, and the Sages declared it unclean; and this was the oven of ‘Aknai.1 Why [the oven of] ‘Aknai? — Said Rab Judah in Samuel's name: [It means] that they encompassed it with arguments2 as a snake, and proved it unclean. It has been taught: On that day R. Eliezer brought forward every imaginable argument ,3 but they did not accept them. Said he to them: ‘If the halachah agrees with me, let this carob-tree prove it!’ Thereupon the carob-tree was torn a hundred cubits out of its place — others affirm, four hundred cubits. ‘No proof can be brought from a carob-tree,’ they retorted. Again he said to them: ‘If the halachah agrees with me, let the stream of water prove it!’ Whereupon the stream of water flowed backwards — ‘No proof
can be brought from a stream of water,’ they rejoined. Again he urged: ‘If the halachah agrees with me, let the walls of the schoolhouse prove it,’ whereupon the walls inclined to fall. But R. Joshua rebuked them, saying: ‘When scholars are engaged in a halachic dispute, what have ye to interfere?’ Hence they did not fall, in honour of R. Joshua, nor did they resume the upright, in honour of R. Eliezer; and they are still standing thus inclined. Again he said to them: ‘If the halachah agrees with me, let it be proved from Heaven!’ Whereupon a Heavenly Voice cried out: ‘Why do ye dispute with R. Eliezer, seeing that in all matters the halachah agrees with him!’ But R. Joshua arose and exclaimed: ‘It is not in heaven.’4 What did he mean by this? — Said R. Jeremiah: That the Torah had already been given at Mount Sinai; we pay no attention to a Heavenly Voice, because Thou hast long since written in the Torah at Mount Sinai, After the majority must one incline.5R. Nathan met Elijah6 and asked him: What did the Holy One, Blessed be He, do in that hour? — He laughed [with joy], he replied, saying, ‘My sons have defeated Me, My sons have defeated Me.’ It was said: On that day all objects which R. Eliezer had declared clean were brought and burnt in fire.7 Then they took a vote and excommunicated him.