I Samuel 25:43 Midrash

וְאֶת־אֲחִינֹ֛עַם לָקַ֥ח דָּוִ֖ד מִֽיִּזְרְעֶ֑אל וַתִּהְיֶ֛יןָ גַּֽם־שְׁתֵּיהֶ֥ן ל֖וֹ לְנָשִֽׁים׃ (ס)

David also took Ahinoam of Jezreel; and they became both of them his wives.

Read midrashic interpretation of I Samuel 25:43: and classical rabbinic exegesis.