Christ serves as the chief cornerstone of the New Covenant Temple - the New Jerusalem - this is simply laid out in scripture, and the early disciples understood this. " ..you also, like living stones, are being built into a spiritual house to be a holy priesthood, offering spiritual sacrifices acceptable to God through Jesus Christ. For it stands in Scripture: “See, I lay in Zion a stone, a chosen and precious cornerstone; and the one who believes in Him will never be put to shame.” (1Peter2) As for the old prophets .. there is almost always a greater and lesser fulfillment .. just as with the physical Temple arrangement, the greater reality is being illustrated in a typical form awaiting the antitypical (greater) fulfillment. The same applies to other books esp Ezek, Joel. It's all preserved for our instruction.