One of the strongest pieces of evidence we often see is when He puts just the right person in just the right spot in our lives, at just the right time to save us from distress. Timing of this nature is out of the realm of the devil, much less that of mankind. Often times, we may refer to this person as our guardian angel, for lack of a better description. Some of us have experienced this many times in our lives, and have been ever so thankful for them. Some of us wouldn't give it the thought.
If you have experienced this and never gave it a thought, thinking instead that it was yourself that made something happen, then you have missed the opportunity to observe God's works in action in your own life and those surrounding you. Only God brings us together for good works.