Here's an interesting challenge to the fundamentalist 'flat' method of biblical interpretation. (Some theologians call this better hermeneutic 'progressive revelation'):

'The process of interpretation which precludes final settlement on almost all questions is evident in the Bible itself. A stunning case in point is the Mosaic teaching in Deuteronomy 23:1-8 that bans from the community all those with distorted sexuality and all those who are foreigners. In Isaiah 56:3-8 this Mosaic teaching is overturned in the Bible itself, offering what Herbert Donner terms an intentional 'abrogation' of Mosaic law through new teaching. The old, no doubt circumstance-driven exclusion is answered by a circumstance-driven inclusiveness.

'In Deuteronomy 24:1, moreover, Moses teaches that marriages broken in infidelity cannot be restored, even if both parties want to get back together. But in Jeremiah 3, in a shocking reversal given in a pathos-filled poem, God's own voice indicates a readiness to violate that Torah teaching for the sake of restored marriage to Israel. The old teaching is seen to be problematic even for God. The latter text shows God prepared to move beyond the old prohibition of Torah in order that the inherent evangelical claims of God's graciousness may be fully available even to a recalcitrant Israel.'

Walter Brueggemann, Christian Century (Jan. 3-10 2001, p.16)