Demonstration of the Spirit and Power

1 Corinthians 2:4-5
"And my speech and my preaching was not with enticing words of man's wisdom, but in demonstration of the Spirit and of power: That your faith should not stand in the wisdom of men, but in the power of God."

What is my faith based in? Have I witnessed the power of God in my life? Can I point to even one example in my recent past? Is His Spirit active in my heart and mind? Do I feel the conviction of the Holy Spirit? Is His "still small voice" speaking to me?