re.a.dah denotes shaking in contexts of fearful service and dread, with one occurrence left unclear by the translation.

The attested use presents a state of shaking associated with fear and dread: Psalm 2:11 joins it to serving the LORD and rejoicing, while Isaiah 33:14 places it among sinners and the profane. Psalm 48:7 contains the same noun form, though the APB’s rendering of the verse does not make its specific contribution clear.

1. Shaking amid fear or dread · dominant

   The singular absolute noun occurs in Psalm 2:11, where the APB renders the clause “Serve the LORD with fear, and rejoice with trembling,” and in Isaiah 33:14, where it says that “trembling has seized the profane.” In Psalm 48:7 the same singular absolute noun is present, but the APB renders the verse “With an east wind you break the ships of Tarshish,” without isolating the noun’s contribution.

   Psalm 2:11Isaiah 33:14Psalm 48:7

In the Anselm Project Bible: The APB explicitly uses “trembling” in Psalm 2:11 and Isaiah 33:14. In Psalm 48:7 it renders the verse in terms of an east wind and ships, so the term’s specific rendering cannot be identified from the translation.