[Iscool]

The fact remains, Paul quoted a well-known passage predicting a "Deliverer" out of "Sion" more than 700 years before the coming of Christ. Such an event has already occurred. Has it not?

Again, nope...

Sure, the deliverer showed up...But NOT as the Deliverer...That won't happen until He shows up again as a roaring Lion...And then, these scriptures will come into play...

Isa 9:6 For unto us a child is born, unto us a son is given: and the government shall be upon his shoulder: and his name shall be called Wonderful, Counsellor, The mighty God, The everlasting Father, The Prince of Peace.
Isa 9:7 Of the increase of his government and peace there shall be no end, upon the throne of David, and upon his kingdom, to order it, and to establish it with judgment and with justice from henceforth even for ever. The zeal of the LORD of hosts will perform this.

[blasater1960]

That won't happen until He shows up again as a roaring Lion...And then, these scriptures will come into play...

Those scriptures dont have anything to do with Jesus. Isaiah 9

And we will only know who the messiah is, AFTER he has accomplished ALL his messianic tasks, not before, not half way, no down payment, after. Otherwise, people will believe in false messiahs.