Ours is not a Bible-reading age. Ask the average American what the names Jeroboam, Rehoboam, Nebuchadnezzar, and Shalmaneser have in common and he is more likely to guess that all belong to rock bands than that they belong to biblical kings. And even though ours is a wine-drinking age, how many of those who know the right answer would know that there is a second answer, too: namely, that these same names also denote different sizes of wine bottles?
To tell the truth, I didn’t know this myself until I recently came across an article on the subject that whet my curiosity. Like most drinkers of wine, I buy it in the standard three-quarters-of-a-liter bottles that are simply called “wine bottles.” I’ve never bought a two-liter bottle, known in the wine trade as a “magnum,” or a three-liter bottle or “jeroboam,” much less a rehoboam (4.5. liters), methuselah (6 liters), salmanazar (9 liters), balthazar (12 liters), nebuchadnezzar (15 liters), melchior (18 liters), solomon (21 liters), or melchizedek (30 liters). I can imagine that any of these would make an impressive gift, though. There is a French winery that advertises it will deliver a melchizedek of champagne to the front door of your choice for 4,386 euros, transportation and tips not included.
Source: Why Are Extremely Large Wine Bottles Named after Biblical Kings? » Mosaic