There were they in great fear: for God is in the generation of the righteous.
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Augustine of Hippo
6. "They have not called upon the Lord." For he doth not really call upon Him, who longs for such things as are displeasing to Him. "There they trembled for fear, where no fear was" (ver. 5): that is, for the loss of things temporal. For they said, "If we let Him thus alone, all men will believe on Him; and the Romans will come, and take away both our place and nation." They feared to lose an earthly kingdom, where no fear was; and they lost the kingdom of heaven, which they ought to have feared. And this must be understood of all temporal goods, the loss of which when men fear, they come not to things eternal. ...
Where. This expression refers to there, which is in Hebrew, though this last part of the verse is wanting. (Capel.)
It is in Psalm lii. 6, and this renders the former omission (ver. 3.) more credible. (Berthier)
When Cyrus approached to besiege Babylon, Nabonides, the king, met him, and gave him battle; but losing the victory, he, in a panic, retreated to Borsippe, and abandoned the defence of his capital. (Beros. apud Jos. con. Ap. 1.) The citizens were in the utmost consternation, Isaias xiii., and xxi. (Calmet)
But the wicked tremble at the prospect of temporal losses, (Menochius) and at shadows, while they boldly affront the Deity. Unbelievers find difficulties in the Catholic doctrines, which are frequently attributed to their own mistakes. (Haydock)
The pagans would not believe in God, but trembled before idols; which cannot hurt the faithful. (Worthington) ...