What does it mean that the Holy Spirit is called the Spirit of Truth?

In John 14:17, the reference to the Holy Spirit as the Spirit of Truth indicates His role in guiding believers to understand and grasp God's truth. He illumines the hearts and minds of Christians, enabling them to discern according to God’s Word. This truth is not merely intellectual; it transforms lives, as affirmed in Romans 8:2, where the Spirit of life delivers believers from the bondage of sin and death. The Holy Spirit’s function is to ensure that believers do not walk in darkness but are led into the light of God's glorious gospel.