Albert Barnes Commentary Judges 14:8

"And after a while he returned to take her; and he turned aside to see the carcass of the lion: and, behold, there was a swarm of bees in the body of the lion, and honey." — Judges 14:8 (ASV)

After the formal dowry and gifts had been given by Samson’s father, an interval, varying according to Eastern custom from a few days to a full year, passed between the betrothal and the wedding. During this time, the bride lived with her friends. Then came the essential part of the marriage ceremony, namely, the removal of the bride from her father’s house to that of the bridegroom or his father.

The carcass of the lion - The lion, slain by him a year or some months before, had now become a mere skeleton, fit for bees to swarm into. It was a widespread belief among the ancients that bees were generated from the carcass of an ox.