How do we know the Holy Spirit is active in believers?

The coming of the Holy Spirit at Pentecost marks a significant event in Christian history, fulfilling Christ's promise to empower His followers (Acts 1:8). The Spirit's activity is evident as He enables believers to witness boldly, live righteously, and engage in effective prayer. Furthermore, the transformation in character and ability to discern spiritual truths exemplifies the Spirit's work. Believers display the fruits of the Spirit (Galatians 5:22-23), indicating His active role in their lives. This dynamic relationship reflects the ongoing presence of God in the life of the church and each believer.