וַיְהִ֣י ׀ אַחֲרֵ֣י לֶכְתָּ֗ם וַֽיַּעֲלוּ֙ מֵֽהַבְּאֵ֔ר וַיֵּ֣לְכ֔וּ וַיַּגִּ֖דוּ לַמֶּ֣לֶךְ דָּוִ֑ד וַיֹּאמְר֣וּ אֶל־דָּוִ֗ד ק֣וּמוּ וְעִבְר֤וּ מְהֵרָה֙ אֶת־הַמַּ֔יִם כִּי־כָ֛כָה יָעַ֥ץ עֲלֵיכֶ֖ם אֲחִיתֹֽפֶל׃
And it came to pass, after they were departed, that they came up out of the well, and went and told king David; and they said unto David: ‘Arise ye, and pass quickly over the water; for thus hath Ahithophel counselled against you.’
Find Talmudic references to II Samuel 17:21: , passages from the Talmud Bavli and Yerushalmi.