Many may be surprised to discover that the New Testament church really isn't all that new - it's what God intended all along. The New Testament church is based on the individual family unit - and many, in theory, would agree. But in practice, they fail miserably.
But with the individual family as its basis, the New Testament church is then a blend of the priesthood of Melchizedek and the Levitical priesthood. It's a combination of both! And so the best way to understand the New Testament church and how it's supposed to be organized and function is to study these Old Testament patterns. Indeed, most of what is practiced in the New Testament church has its foundation in the Old, and it's in being able to properly understand this relationship that any church group could ever hope to function correctly!