I Chronicles 25:24 Midrash

לְשִׁבְעָ֤ה עָשָׂר֙ לְיָשְׁבְּקָ֔שָׁה בָּנָ֥יו וְאֶחָ֖יו שְׁנֵ֥ים עָשָֽׂר׃

For the seventeenth to Joshbekashah, his sons and his brethren, twelve;