Fascinating. There seem to be a huge number of folks, even supposed conservatives on this forum, who think folks are bad people because they're Catholic. In some folks' eyes, the Catholics are not Christians.
Now, I completely disagree with your SIL, and note further that her position is contradictory to that of the Church to which she professes membership.
I was NOT about to start an argument with her about "who knows the Bible better".
No need. "Ezra was a priest and teacher of the Hebrews in the Old Testament." No need to make a production of it.
so 'Ezra' is actually a Jewish name :-)