Challenge regarding Christian morality

[Lek]

Exodus 21:23-25
23"But if there is any further injury, then you shall appoint as a penalty life for life, 24 eye for eye, tooth for tooth, hand for hand, foot for foot, 25 burn for burn, wound for wound, bruise for bruise.

I know what's coming next.... that was the Old Testament, it doesn't apply anymore.
And if you guys keep saying that, then why bother with the OT? Why not just make the Bible just the NT?
And then why also pick out 'laws' from the OT that it seems you want people to still follow?

You're right. I will say that was contained in the old covenant. There is plenty of reason for the old testament; one of which is the demonstration that we cannot attain perfection by following the law. But the fact is that christians are not under the old covenant, but are under the new covenant. When Jesus stated the verses I offered, he was essentially saying the same thing. It was commanded of the Israelites, but we have a new command.