How do we know that the Holy Spirit is present in our lives?

The existence of the Holy Spirit within a believer's life is confirmed through the transformative work He accomplishes. This includes a deep conviction of sin—particularly the sin of unbelief—and an understanding that personal righteousness is non-existent apart from Christ. In Romans 8:9, it is stated that anyone who does not have the Spirit of Christ does not belong to Him, indicating that the very presence of the Holy Spirit is crucial for identifying true believers. Furthermore, the Holy Spirit empowers individuals to live according to God's will, showcasing the fruits of the Spirit in their lives, which further assures the believer of His work within.