The [Threefold Office of Christ](https://en.wikipedia.org/wiki/Threefold_office) is an ancient way of understanding the work of Christ: that he fulfilled the three Old Testament roles of Prophet, Priest, and King. While it's very easy to see in the New Testament how Jesus performs each of those roles, I was wondering if there's any actual basis for seeing these specific roles as part of a specifically threefold office? Because there are some other roles from the Old Testament which Jesus also fulfils. The most prominent one I can think of is the Shepherd/Pastor. While this was a title given to the priests and kings in the OT, it really looks at leadership in a very different way than the intercessory and ruling nature of those roles. Jesus as Shepherd can't be completely subsumed into Jesus as Priest and King. Another minor role could be Patriarch. I'm thinking of this mainly because Jesus is called the ["Last Adam"](https://en.wikipedia.org/wiki/Last_Adam) . I can't think of anything else in the NT that really pictures Jesus as a patriarch, but there might be some other obscure allusions. Teacher could be another minor office. There may be some other roles I haven't thought of too. So my question is whether we're Biblically justified to see the three roles of Prophet, Priest, and King as not only the primary roles fulfilled by Jesus, but also that the three fit together as a whole in a way that other roles do not? Or in other words, does the idea that these three roles form a set originate from God, or are they a human construct? Note that I'm not interested in this question for the basis for each role (that's been adequately covered by [another question](https://christianity.stackexchange.com/q/5624/6071)) , but instead only for the basis that the three belong together in ways that Jesus's other roles do not.

I have heard that Jesus fulfills the three Jewish "offices" of Prophet, Priest, and King. What is significant about this, and how specifically does or did Jesus fulfill those offices?