Reference: Luke 21:21-28
In the absence of light, one factor of it being knowledge and its application in wisdom, the fruits one is likely to bear are fear, hopelessness and chaos. Picture this example: when a novice is given controls in the cockpit of an airplane, the best you might get out of them is that they sit still, frozen and stare blankly.
The abundance of buttons, and flickering lights with no obvious manuals in sight will amplify the daunting nature of what they face and this will consequently amplify the absence of knowledge. In that same seat, a seasoned pilot of many years will feel right at home.
The two reactions in comparison are differentiated by the presence and absence of illumination on the workings of an airplane. In the Gospel today, Jesus describes what is a rather fearful occurrence. However, instead of it causing fear and apprehension, He encourages thus
Now when these things begin to occur, stand tall and lift up your heads [in joy], because your redemption is drawing near (Luke 21:28)
The presence of knowledge about any situation will affect how we respond: whether we will stay grounded in faith or waver in fear and unbelief. Both are a function of the quantity and quality of light we have.