Shaykh Ṣāliḥ ibn Fawzān al-Fawzān:

Do you think that you will be left alone, and Allah has not yet made it distinct who the strivers among you are, and those who are patient? [Quran 3:142]

and

“Allah will not leave the believers as you are until he filters out the rotten from the righteous. Allah will not disclose the secrets of the unseen to you” [Quran 3:179]