Psalm 51/Notes/Lexical.v. 13.306868
From Psalms: Layer by Layer
In the case of ר֥וּחַ קָ֝דְשְׁךָ֗, both "holiness" and "your" modify the spirit. In the context of the Hebrew Bible, God's holy spirit is most likely to be understood as an immaterial emanation or hypostasis of himself that is God's energizing presence. A more explicitly trinitarian reading would be to understand the Holy Spirit as a distinct person of the godhead in relationship to "God" [= the Father] through whom God remains close to the psalmist.