who is the holy spirit and what does he do

The Holy Spirit, in mainstream Christianity, is understood as the third Person of the Trinity—fully God, distinct from the Father and the Son, yet one in being with them. Christians believe he actively works in the world today by giving spiritual life, empowering believers, and guiding the church.

Who the Holy Spirit Is

Most Christian traditions describe the Holy Spirit this way:

• A divine person, not an impersonal force, with will, mind, and the ability to love and speak.
• Fully God, equal in nature, power, and glory with the Father and the Son.
• The third Person of the Trinity, often called Spirit of God, Spirit of Christ, or the Paraclete (Helper).

Some non‑Trinitarian groups view the Holy Spirit differently, for example as God’s power or presence rather than a distinct divine person, but this is a minority view within global Christianity.

What the Holy Spirit Does

From the New Testament and historic Christian teaching, several key works of the Holy Spirit stand out:

• Gives spiritual life and new birth (new creation in Christ).
• Dwells in believers as God’s presence, making them “temples” of God.
• Teaches, reminds, and guides believers into truth.
• Convicts the world of sin, righteousness, and judgment.
• Distributes spiritual gifts for service, mission, and building up the church.
• Produces inner character change, often called the “fruit of the Spirit” (love, joy, peace, etc.).

In Christian worship and daily life, the Holy Spirit is seen as the one who empowers prayer, inspires Scripture’s human authors, and unites believers with Christ and with one another.

TL;DR: In classic Christianity, when people ask “who is the Holy Spirit and what does he do,” the answer is: he is God—personally present to give life, transform hearts, and empower believers to follow Jesus and share his message.

Information gathered from public forums or data available on the internet and portrayed here.