Shalom.What makes you think He died for you?
For me personally or do you mean how do I know that He died? He died for the sins of Israel among whom I identify, and for the sins of the whole world, even the Elect of God that make up the Church, the body of Messiah, the body of Christ, which began entirely Jewish at the outpouring of the Spirit of God recorded in Acts 2.
The answer to your question is found in the Bible however you are asking or whatever you are asking.
Shalom.
Jacob