וְעַתָּ֗ה הִשָּׁ֤בְעָה לִּי֙ בַּֽיהוָ֔ה אִם־תַּכְרִ֥ית אֶת־זַרְעִ֖י אַֽחֲרָ֑י וְאִם־תַּשְׁמִ֥יד אֶת־שְׁמִ֖י מִבֵּ֥ית אָבִֽי׃
Swear now therefore unto me by the LORD, that thou wilt not cut off my seed after me, and that thou wilt not destroy my name out of my father’s house.’
Read midrashic interpretation of I Samuel 24:22: and classical rabbinic exegesis.