Charles Ellicott Commentary Jeremiah 48:30

"I know his wrath, saith Jehovah, that it is nought; his boastings have wrought nothing." — Jeremiah 48:30 (ASV)

His lies will not thus effect it. —The Hebrew for “lies” has also, as in the margin, the meaning of “bars” or “staves” or “branches” as the symbol of defence (Hosea 11:6), but the version in the text is preferable. The emphasis of the original lies in the iteration. “Not so,” the sentence of frustration, is written alike on the wrath which leads to passionate outrage, and on the lies in which it seeks to find safety.