مَا كَانَ اللّٰهُ لِيَذَرَ الْمُؤْمِنِيْنَ عَلٰى مَآ اَنْتُمْ عَلَيْهِ حَتّٰى يَمِيْزَ الْخَبِيْثَ مِنَ الطَّيِّبِ ۗ وَمَا كَانَ اللّٰهُ لِيُطْلِعَكُمْ عَلَى الْغَيْبِ وَلٰكِنَّ اللّٰهَ يَجْتَبِيْ مِنْ رُّسُلِهٖ مَنْ يَّشَاۤءُ ۖ فَاٰمِنُوْا بِاللّٰهِ وَرُسُلِهٖ ۚ وَاِنْ تُؤْمِنُوْا وَتَتَّقُوْا فَلَكُمْ اَجْرٌ عَظِيْمٌ ( آل عمران: ١٧٩ )
Maa kaanal laahu liyazaral mu'mineena 'alaa maaa antum 'alaihi hattaa yameezal khabeesa minat taiyib; wa maa kaanal laahu liyutli'akum 'alal ghaibi wa laakinnal laaha yajtabee mir Rusulihii mai yashaaa'u fa aaminoo billaahi wa Rusulih; wa in tu 'minoo wa tattaqoo falakum ajrun 'azeem (ʾĀl ʿImrān 3:179)
Sahih International:
Allah would not leave the believers in that [state] you are in [presently] until He separates the evil from the good. Nor would Allah reveal to you the unseen. But [instead], Allah chooses of His messengers whom He wills, so believe in Allah and His messengers. And if you believe and fear Him, then for you is a great reward. (Ali 'Imran [3] : 179)
1 Mufti Taqi Usmani
Allah is not to leave the believers in the state you are in, unless He separates the impure from the pure. Allah is not to inform you of the Unseen. But Allah selects from His messengers whom He wills. So, believe in Allah and His messengers. If you believe, and fear Allah, you will deserve a great reward.