Genesis 20:18

18 for the LORD had kept all the women in Abimelek’s household from conceiving because of Abraham’s wife Sarah.

Read Genesis 20:18 Using Other Translations

For the LORD had fast closed up all the wombs of the house of Abimelech, because of Sarah Abraham's wife.
For the LORD had closed all the wombs of the house of Abimelech because of Sarah, Abraham's wife.
For the LORD had caused all the women to be infertile because of what happened with Abraham’s wife, Sarah.

What does Genesis 20:18 mean?

John Gill's Exposition of the Bible
Genesis 20:18

For the Lord had fast closed up all the wombs of the house of
Abimelech
With large tumours probably, so that they could not cohabit with their husbands and conceive; nor could those that had conceived bring forth: and this disorder they were smitten with, because of Sarah Abraham's wife;
who was taken into the house of Abimelech, in order to be his; to rebuke and punish for which, and to convince of the evil of it, and cause to abstain from it, this disorder was inflicted on them.

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