Really? Philo said it was BCE. Josephus says it was BCE. The Talmud says it was BCE. Origen (whose major work on the LXX has been tragically lost) says it was BCE.
Christ himself quoted from it. Did you fail to see the post above????? Why Christ would quote from something not yet written seems a bit odd to me and makes your argument seem either silly or disingenuous.
If you don’t accept the LXX, that’s fine. At least reject it for reasons that are remotely reasonable. Even my evangelical brother who rejects the LXX would be moaning at such a ridiculous statement.
All corrupt and questionable sources.
"Christ himself quoted from it."
No, it might have used material from NT sources that make it appear the other way around. Still no proof of a BC Sept.
“BCE”? From a Christian (I assume)?
OK, but it seems a little politically correct.