וַיֹּ֗אמֶר מָ֤ה הַדָּבָר֙ אֲשֶׁ֣ר דִּבֶּ֣ר אֵלֶ֔יךָ אַל־נָ֥א תְכַחֵ֖ד מִמֶּ֑נִּי כֹּ֣ה יַעֲשֶׂה־לְּךָ֤ אֱלֹהִים֙ וְכֹ֣ה יוֹסִ֔יף אִם־תְּכַחֵ֤ד מִמֶּ֙נִּי֙ דָּבָ֔ר מִכָּל־הַדָּבָ֖ר אֲשֶׁר־דִּבֶּ֥ר אֵלֶֽיךָ׃
[Eli] sagte: Was war es, das [der Herr] zu dir geredet; verhehle es mir doch nicht! Also tue dir Gott, und also fahre er fort, wenn du mir ein Wort verhehlst von der ganzen Rede, die er zu dir geredet.
Makkot
Rebbi Abahu says, The curse of a sage, even on an [unfulfilled] condition will be fulfilled. From where [is this derived]? From Eli. That Eli said to Shmuel (Samuel 1 3, 17) "So will God do to you and so will he add on if you withhold from me anything". And even though it is written (Samuel 1 3, 18) "And Shmuel related to him all of the matter and did not withhold from him", it is still written (Samuel 1 8, 3) " And his sons did not follow in his ways etc.".