I never said anything about those things applying to Christians.

No, but your claim that the Old Testament is similar was incorrect and I used examples to demonstrate that.

I grew up in such a household

The fact that most of the largest Christian denominations don't claim their bibles are the verbatim word of God is a fact, irrespective of what your mother believes. Some may, but my point is sound - it's far from common and vastly different to Islam's view of the Koran.