Melchizedek

In Leviticus and Numbers, ma’aser (tithing) refers to a Temple tax; in Deuteronomy, however, it refers either to what must be brought and consumed on a pilgrimage festival or to charity. This dichotomy led the rabbis to design the cumbersome system of the first and second tithes (maaser rishon and maaser sheni).

Why Melchizedek, a minor biblical character, became so significant in Jewish and Christian interpretation.