In this verse, Paul reflects on his missionary work, emphasizing that it was accomplished not just through his own efforts, but through the power of the Holy Spirit. The mention of 'signs and wonders' indicates that his preaching was accompanied by miraculous events, which served as a testament to the truth and power of the gospel. This underscores the role of the Holy Spirit in authenticating the message of Christ and empowering believers to carry out their mission.
Paul's reference to traveling from Jerusalem to Illyricum illustrates the vast geographical scope of his ministry. It highlights his commitment to spreading the gospel far and wide, reaching diverse communities and cultures. This passage serves as an encouragement to Christians to rely on the Holy Spirit's guidance and power in their own lives, trusting that God can work through them to make a meaningful impact. It reminds believers that the gospel is not just a message to be spoken, but a transformative power to be demonstrated in action and truth.