Again there are variations; The ten ladies dancing Or Ten lords a leaping are the Ten Commandments.
The “five golden rings” are the first five books of the Old Testament called the Torah which are generally considered the most sacred and important of all the Old Testament.
The four calling or colly birds refer to the four gospels.
The three French hens are for faith, hope and love.
The 2nd day of Christmas my true love sent to me two turtle doves.
The reference here is to the Old and the New Testaments.