Jehu met with the brethren of Ahaziah king of Judah, and said, Who are ye? And they answered, We are the brethren of Ahaziah; and we go down to salute the children of the king and the children of the queen. The brethren of Ahaziah - The relatives of his family; for it does not appear that he had any brethren, properly so called: but we know that the term brethren among the Jews signified the relatives of the same family, and especially brothers' and sisters' children: and that these were such, see 2 Chronicles 22:8.
We go down to salute, etc. - So promptly had Jehu executed all his measures, that even the nearest relatives of the murdered kings had not heard of their death, and consequently had no time to escape. They were all taken as in a net.