“And Onan knew that the seed should not be his; and it came to pass, when he went in unto his brother’s wife, that he spilled it on the ground, lest that he should give seed to his brother.”
This verse is a part of the larger narrative of Judah and his sons, which takes place in the book of Genesis. To understand the significance of Genesis 38:9, let’s provide some context:
After the death of his eldest son Er, Judah instructed his second son Onan to fulfill the Levirate law, which required him to marry his deceased brother’s widow, Tamar, and raise up offspring for his brother. This practice ensured the continuation of the deceased brother’s lineage. The child born from this union would be regarded as the child of the deceased brother, thus preserving his family line and inheritance.
However, when Onan had sexual relations with Tamar, he intentionally “spilled his seed on the ground.” Onan’s motive was to prevent impregnating Tamar, which would produce a child who would not be considered his own, but rather his deceased brother’s heir. This act was seen as a violation of the Levirate law and a dishonorable action before God.
Onan’s refusal to fulfill his duty of raising up offspring for his brother had serious consequences. Verse 10 states that God was displeased with Onan’s actions and consequently put him to death. Onan’s refusal to carry out the prescribed duty was considered wicked in the eyes of the Lord.
This passage raises important moral and ethical considerations regarding the fulfillment of obligations and the value of human life. Onan’s primary sin was not necessarily the act of contraception itself but his deliberate disobedience to the commandment and the violation of the cultural practice established to ensure the continuation of a family line. His act was seen as a direct rebellion against God’s design for procreation and family responsibility.
Genesis 38:9 serves as a reminder of the importance of honoring commitments and carrying out responsibilities, particularly in matters related to family and the perpetuation of one’s lineage. It also highlights the significance of obedience to God’s commands, even in situations where personal desires or interests may conflict.
It is important to note that the interpretation and understanding of this passage may vary among different theological perspectives. Therefore, studying the context and consulting commentaries or interpretations from trusted sources can provide further insights into the theological implications and lessons derived from this particular verse.

