What does "Lordship" have to do with the Bible?

"Jesus is far more than just an authority figure; He's also our highest treasure and most precious companion. We obey Him out of sheer delight."

Lately, I have been reading about what it means to repent and submit to Jesus Christ as Lord. There are people who may not understand this, or who may disagree for various reasons, so I found John MacArthur's books and articles helpful. If you would like to see a good, clarifying article that comes from a Bible blooded man, then John MacArthur has a "clarifying" one here:
Clarifying the Lordship debate (part 1) by John MacArthur