God is both surprising and obvious. But most often, He is obvious in retrospect and we can wonder why He seemed surprising (and disappointing, anxiety provoking, irritating or scary).
Peter's vision in Acts 10 and his interaction with God, with Cornelius and with the new gentile believers in Caesarea, seems obvious to us in retrospect, but was probably the last thing that Peter would have expected. We see God's kingdom, grace and power spreading to new geographies and people groups ... Peter saw a revolution, after he struggled with God in his vision. First surprising, then obvious. From our perspective, only obvious.
We can look at another life and see the obvious (or what seems obvious to us) hand of God. We see Him in His providence allowing trying or surprising or difficult or anxiety provoking circumstances, because we tend to rely only on ourselves if we think we can. This is easy to see in retrospect, it is easier to see in retrospect in the life of another. But while it is happening to us, it is not obvious, it is only surprising.
Faith is believing that God is there, that His providence is real, that His love is constant, that He knows all things ... when life is more surprising than it is obvious. Faith is believing that we will one day see God's hand, maybe from eternity, hopefully sooner, when we can't make it out in the present. To encourage, to bear, to build up sometimes means reminding someone else of this when it seems more obvious to you and to be encouraged, to be built up means letting someone else remind us of this when it seems more surprising.