The Oral Torah:

Not so fast, I still have some arguments. Calendar - The Torah explains when Passover is to be observed, but not how the entire calendar works. You did not cite any verses, and neither did the page you linked. Sabbath place - The word for place (maqom) means different things in different verses. (Genesis 1 : 9) "And God said, 'Let the water that is beneath the heavens gather into one place (maqom), and let the dry land appear,' and it was so." (Exodus 3 : 5) "And He said, 'Do not draw near here. Take your shoes off your feet, because the place (maqom) upon which you stand is holy soil.'" It seems that a Maqom can be anything from an ocean to a mountaintop. It is not clear whether a man is not allowed to leave his home, town, province, country, continent, planet, etc. Sabbath labour - It is still very ambiguous. You cannot derive from the Written Torah the answers to these questions: Is "business" (melakha) paid or unpaid work, or both? What exactly is "creating"? Is it only creating the world as in Genesis, or something else? Is it "creating" to make food? Clothes? Other items? Is writing allowed? Drawing? Are there any exceptions? What if there is a life risk? There are so many questions because of the ambiguity of the Written Torah. It is impossible that there is a Written Torah without an Oral Torah to explain it, especially since breaking the Sabbath involves capital punishment. Slaughtering animals - Leviticus 17 says that the animal's blood must be covered with dust, but it does not explain how to slaughter. There are unanswered questions: Where to cut? With what? By who? When? What is the punishment for not doing it properly? Time of renewal of the moon - It is much more difficult to calculate the lunar month to the thousandth of a second than the length of a year to the minute. There are about 525,600 minutes in a year, but over 2.5 billion thousandths of a second in a lunar month. Also, Rabban Gamliel said that he received this knowledge from his ancestors, not from mathematicians or astronomers. Moses wrote everything - When the Torah says that Moses wrote down everything, it is referring to a very specific portion. For example, in Exodus 24 : 3, Moses wrote down only the commandments of separation and setting boundaries, as implied by two facts: 1. In the previous verse, the rest of the Jews are told not to ascend the mountain. 2. This is before the official giving of the Torah, which is in verse 12. Haggai - When the Jews returned to Jerusalem with permission from the Persian government to rebuild the Temple, Haggai tested the priests on their knowledge of the laws of purity. He asked them the following two questions (Haggai 2 : 12-13): "If a man is carrying a sacrificial flesh in a fold of his garment, and with that fold touches bread, stew, wine, oil, or any other food, will the latter become holy?... If someone defiled by a corpse touches any of these, will it be defiled?" The answers to these two questions are not in the Torah. How were the priests to know the answers if not from an oral tradition? The Oral Torah will never be forgotten - (Isaiah 59 : 21) "'As for Me, this is My covenant with them,' says the Lord. 'My spirit, which is upon you and My words that I have placed in your mouth, shall not move from your mouth or from the mouth of your seed and from the mouth of your seed's seed,' said the Lord, 'from now and to eternity.'"