The word LORD in Bibles is actually the same thing as when people put G-d instead of “God”… Anywhere LORD appears in a bible in block capitals, the original text actually had יהוה - the tetragrammaton. Which is “god’s name”, and they decided that printing the name would be using it in vain, so they replaced it with something else, so people could read the bible without sinning.

It wouldn’t surprise me if “Lord יהוה” appeared somewhere in the original text and just got written out as “Lord LORD”… but again, actually knowing anything about religion isn’t actually the point of using religion as a bludgeon for controlling the masses. Why proof read your sign when you need to get out on the streets to let people know they aren’t doing things your Jesus’s way.

Or it’s possible they just wanted it to be taller without being wider. and couldn’t figure out font sizing, so they just doubled it up.

Or they think that doubling a word adds emphasis or something.

Or they’re just complete morons. It’s probably this one.

And either way, I dont think repeating a single word erroneously would make an an aneurysm.