The lamb is a symbol of purity and innocence.
The Lamb is the symbol of innocence in Ancient Craft Masonry. “The Lamb has been recognized an icon of innocence in all eras,” the First Degree guidelines state.
As a result, a Freemason’s Apron is required to be constructed of lambskin. The lamb is a symbol of Jesus Christ in advanced degrees and chivalry degrees, as well as in Christian art.