How Do I Know Jesus Died For My Sins?

1 Corinthians 6:2-4 says:

2. by which also you are saved, if you hold fast that word which I preached to you -- unless you believed in vain.

3. For I delivered to you first of all that which I also received: that Christ died for our sins according to the Scriptures,

4. and that He was buried, and that He rose again the third day according to the Scriptures,