[coksiw]

I think what you are looking for is called Covenant Theology.

Covenant Theology is a form of Biblical Theology. Biblical Theology always sounds right, until a lack of deep understanding of it takes it far its original intention and destroys the unity of Scripture which the Systematic Theology tries to champion. People that champion Covenant Theology also come up with some random stuff.

BTW, David Bernard criticizes both.

Anyway, may God gives you wisdom and understanding to keep things balance.