Every person is deeply untrustworthy. Not because you’re deliberately untrustworthy, but try the best you can, and understand that you will fail.
We are entering a period or a time where the development of events is overwhelming and, particularly when one experiences a part of that overwhelming development in one’s own life, one forgets. One easily forgets that you are not being singled out. You are not being unfairly treated by Allah.
If you truly believed that there is a designing genius, then nothing that can happen to you is outside of the plan. And that you’re always in safe hands. So it is useful to understand just how dangerous how the atheists are. But its also useful to understand, how helpful they are. They objectify for you your own kufr, your own faithlessness.