That is the Bounty from Lord Allah, and Allah is enough as a Knower.
Adhikr is the only Straightpath of the Lord for entire mankind from Adam to the Last Day as explained in verse 6: 153. Whoever follows that Path, only believes with the Lord, Messengers, and Prophets. That means the believer belonging to Lord Allah’s party mentioned in verses 5: 56 and 58: 22 is testifying Adhikr. Such a believer when reads verse 1: 4 prays by the mind to include in Lord's Party. It is told in verse 4: 80: “Whoever obeys the Messenger, he obeys Lord Allah”; whoever follows the last Messenger, he did follow all Messengers and Prophets, and is the truthful, witnesses, and honorable. The character of guided Prophets and believers is explained in verse 19: 58 as: "Those are the Prophets upon whom Lord’s favors are showered from the offspring of Adam, who was carried in the ark with Messenger Noah, offspring of Ibrahim and Ya’qoob; when verses of Impartial Lord were recited upon them, they fell by crying in prostration". It is told in verse 62: 4 that Adhikr is Bounty from Lord, He gives It to those whom He wishes.
It is told in verse 57: 19: “Those who believed with the Lord and with His Messengers, such are the Truthful and Martyrs near their Lord, for them have their reward and their Light. While those who hide and reject Our verses, they will be the inmates of the Hades". Whoever from the people of last Messenger didn't live by seeing Lord through the Best Book Adhikr, at the time of death Lord will tell him that he was among the disbelievers as told in verses 39: 58-59. Not only in verses 4: 150-151, but 520 places also, the true disbelievers are the Arabic Quran reading Fujjar. They are denoted as Mujirims serving Satan as explained in verse 7: 40. They are belonging to disbelievers in Satan’s party who do not do the Prostration of Recitation mentioned in verse 58: 19. See explanation 1: 5-6; 6: 153; 10: 57-58 and 103.