Surah 21. Al-Anbiya, Ayah 93

This is the meaning of the idiomatic phrase, taqatta'u amrahum baynahum. As Zamakhshari points out, the sudden turn of the discourse from the second person plural to the third person is indicative of God's severe disapproval-His "turning away", as it were, from those who are or were guilty of breaking the believers' unity. (See also 23:53 and the corresponding note [30].)

Allah's Message was and ever is one; and His Messengers treated it as one. It is people of narrower views who come later and trade on the earlier names, that break up the Message and the Brotherhood into jarring camps and sects.