Next, we choose presuppositions which will guide our study. A mathematician assumes that parallel lines never intersect, and that arithmetic certainties today will be certain tomorrow. The study of God's word requires similar assumptions.

First, know that Scripture can be understood. Church, creed, or council can guide us, but they cannot prescribe to us. Because of the "priesthood of the believer," every Christian has the right and responsibility to study the Scriptures personally.

Second, understand that the New Testament interprets the Old. The Bible centers in Jesus Christ, the One who fulfills the Hebrew Scriptures (Mt 5:17). We seek in the New Testament guidance for interpreting the Hebrew Bible. For instance, an Old Testament law which is renewed in the New Testament retains the force of law for us today (cf. the Ten Commandments and Mt 19:16-19). An Old Testament law not renewed in the New retains the force of principle for Christian living, but not binding law (cf. the dietary codes of Leviticus and Acts 15:28-29).

Third, use Scripture to interpret Scripture. The Bible is its own best commentary. Study difficult parts of the Bible in light of its clear teachings. For instance, Luke records Jesus' statement that we must "hate" our family to follow Christ (Lk 14:26). But Matthew's version clarifies that we must not love them more than we love Jesus (Mt 10:37). Paul teaches that we must provide for our family (1 Tim 5:8), and that a husband must love his wife as Christ loves the church (Eph 5:25).