Biblical Hebrew has a morphologically productive stem-formation system as a fundamental component in its verbal system. A number of syntactically oriented studies have tried to unravel the intricacies of this system, but what if we need semantic criteria to unravel this system, and what would such criteria be anyway? This paper will approach this challenge by arguing that we need to establish a semantic basis for verb classification in order to be able to look at the Hebrew stems, or binyanim, in a fresh way. Presently we have rather fine tools for syntactic queries into the stem system by means of sophisticated databases like the Werkgroep Informatica database or the Andersen Forbes Analyzed Text and others. But how would we really assess structural information that we have accesss to, and how do can they help us explain the Hebrew Stems? My own solution is to build a verb classification system based on the lexical aspect tradition from Vendler and exploited by Dowty, Van Valin and many others. I attempt to argue for refined criteria for verb classes and I implement such criteria as they are developed in Role and Reference Grammer, in order to build corpora of verb classes with analyses of the most frequent Hebrew verbs. This is part of my ongoing work on building a Role-Lexical Module for linking Hebrew syntax to semantic representation and already reported in a paper read at SBL 2007. My goal is to continue the seminal work of Creason (1995) and to learn from current accounts on of the state of research in Beth Levin and Malka Rappaport Hovav,Argument Realiziation (2005). The paper will focus on how such research can explain some fundamental features of the Hebrew stems and their use.