He knows what is before them and what will be after them. And to Lord Allah, returns the matter of everything.
Three-Time-Knower Lord has already decided and recorded in His Book Adhikr whatever happens in the universe before its creation itself as explained in verse 10: 61. If all previous Messengers were only given Adhikr, the last Messenger Muhammad has been given Adhikr and the Mother of Book as explained in verse 15: 87. The last version of Adhikr sent down to Messenger Muhammad explains everything and It safeguards and testifies all 312 previous Books as explained in verse 5: 48. The Fujjar are denoted as the worst creatures in verse 8: 22 not because that that they are not hearing and conveying the Arabic Quran, but because they are hiding and rejecting Adhikr. See explanation 8: 8; 17: 13-15; 19: 64, 80, and 20: 110.