I Chronicles 25:15 Midrash

הַשְּׁמִינִ֣י יְשַֽׁעְיָ֔הוּ בָּנָ֥יו וְאֶחָ֖יו שְׁנֵ֥ים עָשָֽׂר׃

The eighth to Jeshaiah, his sons and his brethren, twelve;