If we indeed allow God's light (John 8:12) to be placed within the lamp, us, and then do nothing with it, it is like hiding it in a secret place. This is true in our everyday experiences and within the church. This hiding of God's light is another form of spiritual myopia, and perhaps surprisingly, it concerns our relationships with and how we view others. If we become shortsighted in our relations with other people—seeing only what we want to see and not all that we should see—we can become judgmental and critical or patronizing and denigrating to others. In effect, we become the standard, the barometer, that only we know and by which we judge all others.
A common problem with the church today is this lack of light and focus on truly godly issues rather than trivial ones. Seeing only one's personal point of view has caused a general blindness within the church, spawning many of the current issues and problems. Too many members can focus only on their ideas and viewpoints, lacking the insight to see beyond the comfort of their own secret places. Even when the points such people espouse are true, their demeanor toward their brethren is often hostile and their efforts to overcome are lackluster or not based on godly principles.
We can also see elements of spiritual myopia in the independent mindset that many within the church embrace today. Looking exclusively inward, some see themselves as the only viable holders and/or purveyors of God's truth. Though they may attend with a larger group, they see themselves as independent thinkers or needing only themselves and God. Some have taken this independent spirit to the extreme of forsaking others in service and church attendance (Hebrews 10:25). They can even become quite comfortable in their own shortsighted way, wanting little or no interaction with any others who might not see things exactly as they do.
One interesting facet of Luke 11:33-36 is that Jesus alludes to the fact that not everything is distinctly black or white. Verse 35 implies that there are varying degrees of light: "Therefore take heed that the light which is in you is not darkness." All light we see is not at the same level of brightness, so some may see part of the truth but not its fullness. It can also suggest that each person may be "in the dark" on any given matter at any point in their relationship with God and others, while being "in the light" on other matters. Similarly, this can illustrate our relative levels of conversion as well.
Since we know that the true light comes only from God, any variance in intensity must come from how we see or not see something. While verse 34 treats the extremes of how we view things, whether optimistically or pessimistically, many of God's people are somewhere in the middle, like the Laodiceans "neither cold nor hot" (Revelation 3:15). Christ's wish is that we are one or the other!
Of course, the most obvious lesson of these verses is that we should desire Christ's light as our light, seeing and doing things as He would. When we fail in this, Satan's influence and dark ways can become our ways over time. We can totally lose the proper vision and allow his deceptions to blind us. We are all part way down this path; we all have our spiritual blind spots, seeing life and the church through unfocused eyes. Unfortunately, too many of us are not using the aids that would remedy our myopia and put us back on track.