Final answer:
Tamar gave birth to twin sons, Perez and Zerah. Perez replaced his deceased older brother, Er.
Step-by-step explanation:
Tamar gave birth to twin sons, Perez and Zerah. Perez replaced his deceased older brother, Er.
According to the biblical account in Genesis 38, Tamar's first husband, Er, was killed by God for his wickedness.
As per Jewish tradition, Er's brother, Onan, was expected to father a child with Tamar to continue his brother's lineage.
However, Onan intentionally withdrew before ejaculation and spilled his semen on the ground, an act that displeased God, resulting in his death as well.
So, Perez was born to Tamar and Onan, taking the place of Er as the legal heir.