Oh, the children of Adam! Whenever Messengers from among you come upon you explaining My verses, then anyone who becomes heedful and reformers, there shall be no fear upon them, and for them will not be grieved.
This verse addresses the children of Adam, which means the whole of mankind. All 313 Messengers from Noah to Muhammad are deputed with Adhikr to teach mankind that there is no deity except Lord and to serve Him alone as explained in verses 21: 24-25.
As Adhikr is codified today, whomever holdfasts It, he did holdfast Lord and is guided into the Straightpath as explained in verse 5: 48. The Fujjar who don't testify Adhikr after receiving It will be dragged prone on their faces into Hell, those are in the worst place and they are the most strayed as explained in verse 25: 34. The Fujjar by not following any Messenger or Prophet are following twenty-nine pseudo-prophets and are hurrying for the thirtieth pseudo-prophet Antichrist and Doomsday. It is told in verse 33: 40 that Muhammad is the Last Messenger and the seal of the Prophets. That means there is no Prophet from the Lord to come after Muhammad. So if anyone is claiming that he is a Prophet after Muhammad, he is a pseudo-prophet. See explanation 2: 38, 146; 3: 78, and 4: 91.