Holy Spirit

Holy Spirit or Holy Ghost is a term found in English translations of the Bible that is understood differently among the Abrahamic religions. Holy Spirit is stated to be "a realm beyond the ability of words to properly convey. It must be experienced, realized, kindled within like a holy fire." The term is also used to describe aspects of other religions and belief structures.

The word "Spirit" appears as either alone or with other words, in the Hebrew Bible (Old Testament) and the New Testament. Combinations include expressions such as the "Holy Spirit", "Spirit of God", and in Christianity, "Spirit of Christ".

The word Spirit is rendered as רוּחַ (ruach) in Hebrew-language parts of the Old Testament. In its Aramaic parts, the term is rûacḥ. The Greek translation of the Old Testament, the Septuagint, translates the word as πνεῦμα (pneuma). This is the same word that is used throughout the New Testament, written originally in Greek.

The English term "Spirit" comes from its Latin counterpart, spiritus, which is how the Vulgate translates both the Old and New Testament concept. The alternative term, "Holy Ghost", comes from Old English translations of spiritus.

The Hebrew Bible contains the term "Spirit of God" (ruach hakodesh) in the sense of the might of a unitary God. This meaning is different from the Christian concept of "Holy Spirit" as one personality of God in the Trinity.

The Christian concept tends to emphasize the moral aspect of the Holy Spirit more than Judaism, evident in the epithet Holy Spirit that appeared in Jewish religious writings only relatively late but was a common expression in the Christian New Testament.

...
Wikipedia