Aal-i-Imraan 3:179

Allah would not leave the believers in the state you are in, until He distinguishes the evil from the good[86], nor would Allah reveal to you [believers] the unseen, but Allah chooses from His messengers[87] whom He wills. So believe in Allah and His messengers; if you believe and fear Allah, you will have a great reward.

[86] Hypocrites were initially living in the midst of the believers pretending to be believers and wishing for the worst to come upon the real believers. In order to separate the wheat from the chaff, Allah decreed the calamity in the Battle of Uhud; so the hypocrites could be told apart. [87] The unseen here was informing the Prophet Muhammad (ﷺ) about the real hypocrites so that he may be on guard against them.

Allāh would not leave the believers in that [state] you are in [presently] until He separates the evil from the good. Nor would Allāh reveal to you the unseen. But [instead], Allāh chooses of His messengers whom He wills, so believe in Allāh and His messengers. And if you believe and fear Him, then for you is a great reward.

179. Allâh will not leave the believers in the state in which you are now, until He distinguishes the wicked from the good. Nor will Allâh disclose to you the secrets of the Ghaib (unseen), but Allâh chooses of His Messengers whom He wills. So believe in Allâh and His Messengers. And if you believe and fear Allâh, then for you there is a great reward.

It is not (the purpose) of Allah to leave you in your present state till He shall separate the wicked from the good. And it is not (the purpose of) Allah to let you know the Unseen. But Allah chooseth of His messengers whom He will, (to receive knowledge thereof). So believe in Allah and His messengers. If ye believe and ward off (evil), yours will be a vast reward.