He is One who has always done what He said He would do. The devil, and man are characterized by speaking lies and by unfaithfulness. The answer is - you can't really trust anybody. This is a universal sentiment in our day and age. Therefore cynicism is so prevalent, especially in recent generations.
Cynicism is that open mockery of the virtues or motives of other.
This cynicism is often transferred over to God and to Jesus Christ in this unbelieving generation. The apostle Peter predicted this very thing. Surely if He was coming He would have come by now. The world continues on like it always has. Peter goes on to say in that third chapter that what such people willingly ignore is that this is not the first time God has ever threatened a catastrophic judgment upon the human race.