Three Wise Men

Gaspar, Balthasar, and Melchior, the three Wise Men or Magi, visited the Christ child in Bethlehem bearing gifts of gold, frankincense, and myrrh.  The three gifts had a spiritual meaning: gold as a symbol of kingship on earth, frankincense as a symbol of priestship, and myrrh (an embalming oil) as a symbol of death.  Sometimes this is described more generally as gold symbolizing virtue, frankincense symbolizing prayer, and myrrh symbolizing suffering.  All three are ordinary offerings given to a king.  It has been suggested also by scholars that the "gifts" were medicinal rather than precious material for tribute.  The three wise men were probably priests from Persia who traveled a long distance, perhaps 1,000 miles, on their pilgrimage to Bethlehem.

From Threes, Chapter Four, “Threes in Religion and Mythology”