What is the Holy Spirit's role in Trinitarian salvation?

In Trinitarian salvation, the Holy Spirit is essential as He administers all aspects of grace to believers. He orchestrates the process of regeneration, making the dead hearts of sinners alive to respond to the Gospel, as emphasized in Ephesians 1:13-14, which speaks of the Holy Spirit sealing those who believe. This divine work involves calling the elect by irresistible grace, enlightening them to understand the truth of Christ, and empowering their faith. The Holy Spirit not only leads believers to Christ but also continually equips them for godly living and perseverance until the day of redemption, reaffirming that our salvation is a comprehensive work of all three persons of the Trinity.