Old Testament Prophecy vs New Testament Prophetic Calling

I do see some differences here certainly you know Old Testament prophecy the sort of the say at the Lord authority that comes with it. Agabus is not only agabus feels like an Old Testament prophet he's even described as saying this is what the Holy Spirit says. John has a prophetic calling in Revelation 1 9 to 20 that is clearly reminiscent of Isaiah and Ezekiel John in fact there's several things that echo the prophetic ministry of Ezekiel so when John is called a prophet or at least writing a prophecy is described as being called just like the prophets of old.