One example where a New Testament writer views an Old Testament prophetic passage as needing to be fulfilled literally in the future is Paul’s use of Isaiah 59:20-21 in Romans 11:26-27:
and so all Israel will be saved; just as it is written,
“The Deliverer will come from Zion,
He will remove ungodliness from Jacob.”
27 “This is My covenant with them,
When I take away their sins.”
This statement by Paul comes in the context of his discussion concerning why God’s Word has not failed concerning Israel in Romans 9-11. In showing how Paul uses this passage I start with explaining Isaiah 59:20-21 in its original context.
Isaiah 59:20-21 in Context
Isaiah 59:20-21 reads:
“A Redeemer will come to Zion,
And to those who turn from transgression in Jacob,” declares the Lord.
21 “As for Me, this is My covenant with them,” says the Lord: “My Spirit which is upon you, and My words which I have put in your mouth shall not depart from your mouth, nor from the mouth of your offspring, nor from the mouth of your offspring’s offspring,” says the Lord, “from now and forever.”