Psalms 113:9 - Matthew Poole's English Annotations on the Holy Bible

To keep house, Heb. to dwell in a house or family, or amongst children, to wit, coming out of her own womb, as is clearly implied by the opposition of this to her barrenness. And the word house is oft put for children, as Exodus 1:21 Ruth 4:11 Psalms 115:10,12. And so it is explained in the next clause.