2 Corth. 13:5:
A carpenter's level is known as a bubble level or a spirit level. It is used to indicate whether a surface is horizontally level or vertically plumb.
Accuracy of the level depends on sensitivity. Sensitivity is given by the change of angle, required to move the bubble.
Using the spiritual level in our Christian life we are overviewing our life to make sure it is horizontally level and vertically plumb. Is our foundation, our surface on "level"?
Our spiritual level has three markings.
The center is marked with a "C" what I like to call "Centered in Christ". This is where we should strive to be daily; meaning our Christian bubble (life) is balanced in Christ. Our sensitivity is focused on our cornerstone Jesus. When completely in his will and fellowship we are ready to build.
If we lean toward the side marked "W" the world, we see something happens. Our bubble begins to move and is no longer centered. Giving into the world, we become sensitive or react to what it has to offer. Our life becomes lop-sided. We can't be used and we can't be blessed in this position. A carpenter would never start building with a surface like that.
The same is true if we tend to lean to the side marked with an "S" for self. Self becomes the destructive force in the daily Christian walk. Self allows no room for Christ to receive the glory and we become uncentered. Once again a carpenter would never start building with a surface like that.
The important thing to realize about the level is it is a tool of examination. It cannot change the angle it can only show us what to work on to make the surface level and usable.