Isaiah 48

2 comments from the early church. Read Isaiah 48

Verse 16

Now it is Jesus Christ who is speaking here as the "Lord God"; yet this would not have been obvious if he had not added the final words, "And now the Lord God has sent me and his Spirit." These words were spoken by Christ in his "form" as a "servant." He used a verb in the past tense to indicate a future event.
Augustine of Hippo · d. 430City of God

Verse 20

"Come forth out of Babylon." If we take the command of the prophet in a spiritual sense, it means that we should fly from the city of this world, from the fellowship of wicked angels and wicked [people], with the feet of that faith that works through love, and we should press onward unceasingly toward the living God.
Augustine of Hippo · d. 430City of God