my true love sent to me,
10 Lords A-Leaping
These dancers were most likely Morris dancers who performed leaping dances between courses at feasts. It is a form of ancient folk dancing & the dancers wore all sorts of bells on their tights and were very lively jumping all over the place then tried to get those 9 ladies to dance with them. Not really.
The biblical association for this verse is easy; the 10 Commandments.
Your devotion for the 10th day of Christmas is right here!