Albert Barnes Commentary 2 Chronicles 16:14

"And they buried him in his own sepulchres, which he had hewn out for himself in the city of David, and laid him in the bed which was filled with sweet odors and divers kinds [of spices] prepared by the perfumers` art: and they made a very great burning for him." — 2 Chronicles 16:14 (ASV)

The explanation for the plural term “sepulchres” is found in the note on 1 Kings 13:30.

The burning of spices in honor of a king at his funeral was customary (compare the marginal references).