שָׁ֣לַֽח חֹ֭שֶׁךְ וַיַּחְשִׁ֑ךְ וְלֹֽא־מָ֝ר֗וּ אֶת־דברוו [דְּבָרֽוֹ׃]
ער האָט אָנגעשיקט פֿינצטערניש און פֿינצטער געמאַכט;און זײ האָבן ניט װידערשפּעניקט זײַן װאָרט.
Rashi
And they did not disobey His word The plagues, that He commanded upon them, came according to His commandments and did not deviate from His word.