They brought him on horses - i. e. they conveyed his body back to Jerusalem in the royal chariot. The combination of relentless animosity against the living prince with the deepest respect for his dead remains is very characteristic of an Oriental people.
Related Commentaries of 2 Kings 14:20
2 Kings 14:20
20 And they brought him on horses: and he was buried at Jerusalem with his fathers in the city of David.