It was Sarah who called Abraham 'Lord'. Unless you are thinking of a different reference to THE LORD in His encounter with Mary and Martha.
Anyway, I had to let my mind run through that first also, because it is just one of those mornings; 'I have never heard of a LORD bearing'
OKAY, now that that is out of our system.
Can't say as I can actually answer your question. Just couldn't resist the intervention/hijack.
He Is In Control, Have a Great Day, Brent