That is because indeed Messengers had come to them with the Explanations, then they denied, then Allah seized them, indeed He is strong, severe in torment.
The “Explanation” mentioned in this verse is one of the 40 names of Adhikr. The ancestors were punished when they became wrongdoers and transgressors by not utilizing Adhikr and preventing mankind from it. When there is no believer left who utilizes Adhikr as the Balance and Trust to keep the universe in its equilibrium and as a Safeguard and Shield against all disasters, diseases, and Hellfire, the Antichrist—one of the ten crucial signs of the Last Day—will come, as explained in verse 6: 158. No soul will benefit after the coming of the Antichrist. See explanation 7: 96; 12: 110; 40: 5.