King James Version (KJV)
They {are} vanity, the work of errors: in the time of their visitation they shall perish.
Modern English
They are vanity, a work of delusion. In the time of their visitation, they will perish.
Hebrew
הֶ֣בֶל הֵ֔מָּה מַעֲשֵׂ֖ה תַּעְתֻּעִ֑ים בְּעֵ֥ת פְּקֻדָּתָ֖ם יֹאבֵֽדוּ׃
hebel hemah maʿasheh taʿtuʿiym bʿet pqudatam yoʾbedv