The Twelve Days of Christmas

Are you familiar with the song?

On the first day of Christmas,

...

On the twelfth day of Christmas, 

my true love sent to me 

Twelve drummers drumming,

Eleven pipers piping,

Ten lords a-leaping,

Nine ladies dancing,

Eight maids a-milking,

Seven swans a-swimming,

Six geese a-laying,

Five golden rings,

Four calling birds,

Three French hens,

Two turtle doves,

And a partridge in a pear tree!

This song is not just a simple rhyme or tune. This song, when delved deeper would remind us of our Christianity.

Religious symbolism of The Twelve Days of Christmas (The 12 Days of Christmas)
1 True Love refers to God
2 Turtle Doves refers to the Old and New Testaments
3 French Hens refers to Faith, Hope and Charity, the Theological Virtues
4 Calling Birds refers to the Four Gospels and/or the Four Evangelists
5 Golden Rings refers to the first Five Books of the Old Testament, the "Pentateuch", which gives the history of man's fall from grace.
6 Geese A-laying refers to the six days of creation
7 Swans A-swimming refers to the seven gifts of the Holy Spirit, the seven sacraments
8 Maids A-milking refers to the eight beatitudes
9 Ladies Dancing refers to the nine Fruits of the Holy Spirit
10 Lords A-leaping refers to the ten commandments
11 Pipers Piping refers to the eleven faithful apostles
12 Drummers Drumming refers to the twelve points of doctrine in the Apostle's Creed

(source: The Twelve Days of Christmas)

Further reading(s): The Twelve Days of Chrsitmas