Notice how the meaning changes while the actual words stay the same.

1. I didn't say he stole the money. Someone else said it.
2. I didn't say he stole the money. That's not true at all.
3. I didn't say he stole the money. I only suggested the possibility.
4. I didn't say he stole the money. I think someone else took it.
5. I didn't say he stole the money. Maybe he just borrowed it.
6. I didn't say he stole the money, but rather some other money.
7. I didn't say he stole the money. He may have taken some jewelry.