The first Catholic Mass in an airship took place on the Hindenburg on May 5, 1936.

The first pontiff to fly in an airplane: Pope Paul VI (1963-1978) in 1964.

Pentecost means "fiftieth" in Greek; it falls 50 days after Jesus' crucifixion.

Amen is a Hebrew word that can mean "certainly," "truly," and even "so be it."

Longest name in the Bible: Mahershalalhashbaz, the second son of Isaiah.

The American Bible Society has distributed more than a billion Bibles since 1816.

On average, 47 Bibles per minute are sold or distributed around the world every day.

Pope John Paul II is the first non-Italian pontiff since Adrian IV (1522-1523).

Every pope since Sergius IV (1009-1012) has changed his name.

Top four countries with the most Catholic saints: Italy, Spain, France and Korea.

The United Nations declared the Vatican City a "war-free zone" in 1960.

Between 800 and 1,000 people live in Vatican City; roughly 4,000 people work there.

Famous forgotten date: November 23, 1964, the last mandatory Latin Mass. From that day on, most Masses were celebrated in the vernacular.

The names of the Virgin Mary's mother were Joachim and Anne.

The Pope's white skullcap is called a zuchetto (no, it isn't called a yarmulke).