Polygamy really is Biblical! SM
By implication from number of sons...
"Of Heman: the sons of Heman; Bukkiah, Mattaniah, Uzziel, Shebuel, and Jerimoth, Hananiah, Hanani, Eliathah, Giddalti, and Romamtiezer, Joshbekashah, Mallothi, Hothir, and Mahazioth:" 1 Chronicles 25:4