[Zionist Conspirator]

God chose to reveal to us certain truths for the sake of our salvation. This message of salvation is the set of revealed truths which we call the "deposit of faith," or Divine Revelation. The Bible is primarily concerned with telling us these truths, which are without error. God himself made sure of that.

So, does this mean the Bible is only inerrant when teaching theological matters?

[annalex]

No, that phrase simply means that God revealed to us what He chose to reveal and that which He revealed is inerrant.

Sections more pertinent to your habitual concern would be

God also used human language and knowledge—with all of its limitations—to tell us his eternal truths.

[...]

if you don't understand what the sacred author was saying to people in his own cultural context, in terms as they were used at the time, you won't be able to clearly see what God is saying through him.

[Claud]

So, does this mean the Bible is only inerrant when teaching theological matters?

No. It means what it says....the theological matters are of primary significance.

I see where you're going with this though....the author might (I didn't read closely) want to carve out for himself a niche in which to say that non-theological facts could be in error. If so, he's being rather imprudent IMHO.