5.2 Ruach HaKodesh:
The Spirit of God in the Hebrew Bible
Before discussing the Holy Spirit in Christianity, it is helpful to understand where the concept came from.
Christianity emerged from first-century Judaism. Jesus, His disciples, and the earliest Christians were Jews who were deeply familiar with the Hebrew Scriptures. As a result, Christian ideas about the Holy Spirit developed from earlier Jewish beliefs about God’s Spirit that were already present throughout the Hebrew Bible. The Hebrew Bible is known in Christianity as the Old Testament.
For this reason, we will begin by examining the Jewish concept of Ruach HaKodesh, often translated as “the Holy Spirit.” Related phrases such as Ruach Elohim (“Spirit of God”) and Ruach Adonai (“Spirit of the LORD”) also appear in the Hebrew Scriptures.
Understanding how God’s Spirit was viewed in the Hebrew Scriptures provides important context for understanding how later Christians came to speak about the Holy Spirit and the role the Spirit plays within Christian theology.
Ruach is a multifaceted Hebrew word that translates to wind, breath, or spirit. In ancient texts, it represents the breath, life, energy, or animating power associated with living beings and, in some passages, with God’s activity. Throughout the Hebrew Bible, ruach is frequently associated with God’s presence, power, wisdom, and activity in the world.
One of the earliest references appears in Genesis 1. During the creation account, the Spirit of God is described as moving over the waters before the world was formed. This image presents God’s Spirit as active in creation and involved in bringing order out of chaos.
The Spirit of God also appears throughout the lives of important figures in Israel’s history. The judges who led Israel were sometimes described as being empowered by the Spirit of God. Leaders such as Moses, Joshua, Gideon, Samson, and others were said to receive divine wisdom, strength, courage, or guidance through God’s Spirit. In these accounts, the Spirit is a manifestation of God’s power working through human beings.
The prophets likewise spoke under the influence of God’s Spirit. The prophets believed and explained that they had been called and inspired by God to deliver His message. Several passages describe God’s Spirit resting upon or filling individuals for a particular purpose. The Spirit is associated with wisdom, understanding, righteousness, justice, and faithful obedience to God.
The Hebrew Bible also connects God’s Spirit with life itself. In Genesis, God breathes the breath of life into Adam. Elsewhere, God’s Spirit is described as giving life to living creatures and sustaining creation. Without God’s breath or Spirit, life ceases. This connection between breath, life, and divine presence is one reason the Hebrew word ruach carries multiple related meanings.
In Jewish thought, Ruach HaKodesh is generally understood as God’s holy presence, inspiration, or activity rather than a separate divine being. Jewish tradition emphasizes the absolute oneness of God. As a result, references to God’s Spirit are typically understood as descriptions of God acting within creation, communicating with people, granting wisdom, or empowering individuals to fulfill His purposes. In Jewish theology, Ruach HaKodesh is not understood as a distinct divine person or as a separate part of God.
Many Jewish writings describe Ruach HaKodesh as the source of prophecy and divine inspiration. Through His Spirit, God reveals truth, grants insight, and guides His people. The Spirit is associated with holiness, wisdom, justice, and faithfulness to God’s covenant.
The concept of Ruach HaKodesh therefore plays an important role throughout the Hebrew Bible. It serves as a way of describing God’s presence and power at work in creation, in the lives of individuals, and in the history of Israel. Long before the rise of Christianity, Jewish Scripture presented God’s Spirit as an active force through which God creates, guides, inspires, and sustains life.
In section 5.3, we will look at the Holy Spirit in Christianity.