When most think of the "power of the Holy Spirit" what comes to mind is rushing mighty wind, cloven tongues of fire and speaking with tongues. Some think of casting out devils, laying hands on the sick, or one of the nine gifts of the Spirit. While these may be manifestations of the "power of the Holy Spirit," there is a power of the Spirit in the believer's life that is quite forgotten, the power of subtlety.
This is the power of the Spirit that is overlooked because it works, at times, when I am unaware of its presence. It is not audible or visible, and is often undetectable, especially to those around me. It is a work of the Spirit that brings glory to no one but God.
It is the power of the Spirit that gradually and slowly sanctifies me in practical and ordinary ways. It is at work when I find myself saying no to things that I used to say yes to. It is that small change in attitude toward a situation that normally disturbs me. It is the will to resist the seduction of besetting sins. It is inner peace about a situation that had been ruling me in fear.
It is the Spirit working change in me that I did not realize happened until after the fact. It is not flashy or glamourous, but dynamic none the less. God help us remember that you are at work in us in the mundane, not just the mighty. It is this power of the Spirit that worked for Elijah: not in the strong wind, the earthquake, or the fire, but in a still small voice.