We are unlike the Christians of the New Testament. Our approach to life is conventional and static; theirs was not. The thought of ‘safety first’ was not a drag on their enterprise as it is on ours. By being exuberant, unconventional, and uninhibited in living by the gospel, they turned their world upside down…Why are we so different? Why, compared with them, do we appear as no more than halfway Christians? Whence comes the nervous, dithery, take-no-risks mood that mars so much of our discipleship? Why are we not free enough from fear and anxiety to allow ourselves to go full strength in following Christ?…Now let us call a spade a spade. The name of the game we are playing is unbelief.

–J.I. Packer, Knowing God, p. 270