Spiritual force...

God guides our lives. It is not enough to have an impelling force--we need just as much a repelling force, and so He holds us back by the testing ordeals of life, by the pressure of temptation and trial, by the things that seem against us, but really are furthering our way and establishing our goings.

Let us thank Him for both, let us take the weights as well as the wings, and thus divinely impelled, let us press on with faith and patience in our high and heavenly calling. --A. B. Simpson