3 For you will spread out to the right and to the left; your descendants will dispossess nations and settle in their desolate cities.

Read Isaiah 54:3 Using Other Translations

For thou shalt break forth on the right hand and on the left; and thy seed shall inherit the Gentiles, and make the desolate cities to be inhabited.
For you will spread abroad to the right and to the left, and your offspring will possess the nations and will people the desolate cities.
For you will soon be bursting at the seams. Your descendants will occupy other nations and resettle the ruined cities.