Judges 8:30 in the World English Bible
Gideon had seventy sons conceived from his body, for he had many wives.
Context
29 And Jerubbaal the son of Joash went and dwelt in his own house.
30 And Gideon had threescore and ten sons of his body begotten: for he had many wives.
31 And his concubine that was in Shechem, she also bare him a son, whose name he called Abimelech.