When Sanballat the Horonite
Who either presided at Horonaim, or sprung from thence, a city of Moab, ( Isaiah 15:5 )
and Tobiah the servant, the Ammonite;
who was formerly a slave, but now raised, from a low mean estate, to be governor in the land of Ammon, though still a vassal of the king of Persia:
heard of it, it grieved them exceedingly that there came a
man to seek
the welfare of the children of Israel;
to which the Moabites and Ammonites were always averse, and ever bore an hatred to Israel, and envied everything that tended to their happiness.