Charles Ellicott Commentary Isaiah 54:3

"For thou shalt spread aboard on the right hand and on the left; and thy seed shall possess the nations, and make the desolate cities to be inhabited." — Isaiah 54:3 (ASV)

On the right hand and on the left. — Compare to Genesis 28:14. Strictly speaking, the words indicate specifically the north and the south, in relation to one who stands looking towards the East. Here, of course, they mean “on every side.” The words that follow have, like others, a lower or material and a higher or spiritual meaning.