So Abraham prayed unto God. Literally, the Elohim, the personal and true God, and not Elohim, or Deity in general, to whom belonged the cure of Abimelech and his household (Keil), as the next clause shows.
And God (Elohim, without the art.) healed Abimelech, and his wife, and his maid-servants;—i.e. his concubines, as distinguished from the women servants (Genesis 20:14)—and they bare children. The verb may apply to both sexes, and the malady under which they suffered may be here described as one which prevented procreation, as the next verse explains.