Question: In Job 3:25, was Job telling Christians that everything we greatly fear will come upon us?
Answer: I will quote Job 3:25, "For the thing which I greatly feared is come upon me, and that which I was afraid of is come unto me." This verse has to be taken in context and is explained by Job 1:4,5, where we find that Job continually made sacrifices for his family, because he was afraid they might have "sinned or cursed God in their hearts," and judgment might fall. This was "the thing" which Job greatly feared. We would have to say, in this, Job typified many parents of today.
Job did not know that God was allowing Satan to test him; as a result of which he lost his family, possessions, and health. (Job 1:6-12 and Job 2:3-6). He did not know God was going to bless him more at his latter end, than his beginning, for his faithful endurance of the trial. God gives us the "rest of the story" in Job 42:12,13.
God does not want Christians to be as worried as Job reveals himself to have been in Job 3:26, "I was not in safety, neither had I rest, neither was I quiet; yet trouble came." In other words, "I worried, and trouble came anyway." What should a Christian do when he experiences the testing of Satan as described in 1 Peter 5:8? The answer is:
"Be careful for nothing (Don’t worry!); but in everything by prayer and supplication with thanksgiving let your requests be made known unto God.(6) And the peace of God, which passeth all understanding, shall keep your hearts and minds through Christ Jesus." - Philippians 4:6,7
Why worry—when you can pray!