What is this "spirit [that] glided past my face, and the hair on my body ..." which Eliphaz the Temanite told Job about?

Job 4 English Standard Version (ESV)
4 Then Eliphaz the Temanite answered and said:

15 A spirit glided past my face;
    the hair of my flesh stood up.

Job 4:4

ESV - ⁴ Your words have upheld him who was stumbling, and you have made firm the feeble knees.

Clarify • Share • Report • Asked September 22 2018 • Jack Gutknecht