וַיֹּ֤אמֶר אֲחִיתֹ֙פֶל֙ אֶל־אַבְשָׁלֹ֔ם בּ֚וֹא אֶל־פִּלַגְשֵׁ֣י אָבִ֔יךָ אֲשֶׁ֥ר הִנִּ֖יחַ לִשְׁמ֣וֹר הַבָּ֑יִת וְשָׁמַ֤ע כָּל־יִשְׂרָאֵל֙ כִּֽי־נִבְאַ֣שְׁתָּ אֶת־אָבִ֔יךָ וְחָ֣זְק֔וּ יְדֵ֖י כָּל־אֲשֶׁ֥ר אִתָּֽךְ׃
And Ahithophel said unto Absalom: ‘Go in unto thy father’s concubines, that he hath left to keep the house; and all Israel will hear that thou art abhorred of thy father; then will the hands of all that are with thee be strong.’
Genesis
When Yaakov was settled in that land. Reuvein went and lay near Bilhah, his father’s concubine, and Yisrael heard [about it]. The sons of Yaakov were twelve.