7 This is the section, Job 26:5–14, that many conclude makes better sense coming from the friend. But if it is attributed to Job, then he is showing he can surpass them in his treatise of the greatness of God.
8 The text has הָרְפָאִים (haréfa’im, “the shades”), referring to the “dead,” or the elite among the dead (see Isa 14:9; 26:14; Ps 88:10 [11]). For further discussion, start with A. R. Johnson, The Vitality of the Individual, 88ff.
9 The verb is a Polal from חִיל (khil) which means “to tremble.” It shows that even these spirits cannot escape the terror.
10 Most commentators wish to lengthen the verse and make it more parallel, but nothing is gained by doing this.

In other versions

The dead tremble

under the waters and their inhabitants.

“The dead are in deep anguish,

those beneath the waters and all that live in them.

The departed spirits tremble

beneath the waters and all that inhabit them.

“The dead tremble—

those who live beneath the waters.

“The spirits of the dead tremble

below the waters and their inhabitants.

Dead things are formed

From under the waters, and the inhabitants thereof.

Public Domain

Job 26:5