I Chronicles 25:14 Midrash

הַשְּׁבִעִ֣י יְשַׂרְאֵ֔לָה בָּנָ֥יו וְאֶחָ֖יו שְׁנֵ֥ים עָשָֽׂר׃

The seventh to Jesarelah, his sons and his brethren, twelve;

Read midrashic interpretation of I Chronicles 25:14: and classical rabbinic exegesis.