1892 [e]   18 he·ḇel   18 הֶ֣בֶל    18 A vapor   18 N‑ms   18

1992 [e] hêm·māh, הֵ֔מָּה they [are] Pro‑3mp

4639 [e] ma·‘ă·śêh מַעֲשֵׂ֖ה a work N‑msc

8595 [e] ta‘·tu·‘îm; תַּעְתֻּעִ֑ים of delusion N‑mp

6256 [e] bə·‘êṯ בְּעֵ֥ת in the time Prep‑b ¦ N‑csc

6486 [e] pə·qud·dā·ṯām פְּקֻדָּתָ֖ם of their visitation N‑fsc ¦ 3mp

6 [e] yō·ḇê·ḏū. יֹאבֵֽדוּ׃ they will perish V‑Qal‑Imperf‑3mp

Berean Study Bible
They are worthless, a work to be mocked. In the time of their punishment they will perish.

Young's Literal Translation
Vanity [are] they—work of errors, In the time of their inspection they perish.

Holman Christian Standard Bible
They are worthless,  a work to be mocked. At the time of their  punishment they will be destroyed. 

New American Standard Bible
They are worthless, a work of mockery; In the time of their punishment they will perish.

King James Bible
They [are] vanity, the work of errors: in the time of their visitation they shall perish. Jeremiah 51:18 • Jeremiah 51:18 NIV • Jeremiah 51:18 NLT • Jeremiah 51:18 ESV • Jeremiah 51:18 NASB • Jeremiah 51:18 KJV • Jeremiah 51:18 Biblia Paralela • Jeremiah 51:18 Chinese Bible • Jeremiah 51:18 French Bible • Jeremiah 51:18 German Bible

Bible Hub