2 Corinthians 12:1-13. The apostle Paul’s life and testimony, to boast in God and not in himself, boast in his weakness to show the power of God. God’s power is manifest, perfected in weakness. God has chose the foolish, weak, despised thing to show His power in. His power in us. God purpose is not to make us strong but rather to be strong in us, His power at work in and through us, we serve a mighty God.
Power in ministry, the power of God, not our power. 1 Corinthians 2:1-5
1 Corinthians 1:17 For Christ did not send me to baptize, but to preach the gospel, not in cleverness of speech, so that the cross of Christ would not be made void.