These verses ring with the doctrine of temple work. The original children, who were "lost", or dead, in verse 20 and 21 are brought back in the arms of the Gentiles, through the ordinances of the temple. Pay attention to the title these Gentiles receive in verse 23. The Lord says he will "save thy children" in verse 25 by the prey being taken from the mighty, and the captives being delivered. In other words, the dead in spirit prison, and lawfully so, will be delivered through the work of temple ordinances.