214. One messenger each to a community. 

These two verses of the Quran (10:47, 16:36) say each community was assigned a messenger.

And that some communities were assigned more than one.

These verses 10:75, 19:53, 20:30, 21:48, 23:45, 25:35, 26:13, 28:34 of the Quran talk of Prophet Musa, and Prophet Haroon, two prophets being assigned at the same time to a single community.

And in verse 36:14, the Quran talk about three messengers being assigned at the same time to a community.

These two messages should not be viewed as at loggerheads with each other because though more than one messenger was assigned to communities at the same time, they were guided and bestowed the same scripture and same guidance. They were not given as many scriptures according to their numbers and, all the messengers of the same time were in the same level of a single and similar message.