Recent Poll Results re: Original Purpose of Torah

Our recent poll produced the following Results

For Which Principle Purpose Did God Give the Torah to Israel?

1. To Provide a Common Historical Narrative 0 (0%)
2. To Bring About the Messiah (4%)
3. To Justify Israel's Right to its Homeland 0 (0%)
4. To Provide a Basis for Humans to Relate to God 11 (50%)
5. To Provide a Roadmap for Self-Perfection2 (9%)
6. To Provide Israel with a Constitution 0 (0%)
7. To Promote a Just and Holy Society 6 (27%)
8. To Provide a Text for Religious Instruction (4%)
9. To Make Israel Unique (4%)

As I see It [aisi] the original purpose is stated in the Torah itself - just before the giving of the so-called "10 commandments". I construe this as analogous to the US Constitution's Preamble.

Can any0ne "guess" as to which verse I refer?

KT
RRW