Er his firstborn # 01_GEN_38_06  And Judah took a wife for Er his firstborn, whose name [was] Tamar. ## And Judah took a wife for Er his firstborn, whose name [was] Tamar. 
Jether his firstborn # 07_JUD_08_20  And he said unto Jether his firstborn, Up, [and] slay them. But the youth drew not his sword_ for he feared, because he [was] yet a youth. ## And he said unto Jether his firstborn, Up, [and] slay them. But the youth drew not his sword: for he feared, because he [was] yet a youth.