1 Peter 4:12

Beloved, do not be surprised at the fiery ordeal which is taking place to test you (that is, to test the quality of your faith), as though something strange or unusual were happening to you.

Peter has wisdom and insight into this problem.  Peter took a faith test and denied Jesus right before Jesus went to the cross.  Did Peter grieve in his heart that he failed the test that Jesus said was coming?  Yes!  But! Even though he failed, he picked himself up and went forward with Jesus.  We should not be surprised that we will be tested, but we should pick ourselves up and keep going with Jesus no matter what.