This thesis explores the evolution plural verbal -s ("People thinks he is guilty") and zero 3rd singular ("He think he is guilty") in data from two sources on Southern English: The Linguistic Atlas of the Gulf States (LAGS) and The Linguistic Atlas of the Middle and South Atlantic States (LAMSAS). The research questions that underlie this study consider (1) the demographic association of plural verbal -s and zero 3rd singular, (2) the maintenance of each form, (3) the constraints on their use, and (4) the origins of -s variability. The atlas data suggest the following for plural verbal -s: (1) it has a British source, (2) it was present in both African American Vernacular English (AAVE) and early Southern White English (SWE), and (3) there were different grammatical constraints on its use in AAVE and SWE. Data for zero 3rd singular -s suggest this form (1) did not have a British source and (2) that it has historically been an AAVE feature.

This thesis is concerned with the correlation between cultural values and the semantic content of words over time; toward this purpose, the research focuses on Judeo-Christian religious terminology in the English language. The Sapir-Whorf hypothesis is of central interest to this study, and the implications of the hypothesis, including a bidirectional interpretation allowing for both the influence of language on worldview and culture on language, is of great relevance to the research findings and conclusions. The paper focuses on the etymology and sources of religious terminology in the English language, the prominent category of terms with both religious and secular applications attained through semantic shift, and the role of religious words as English taboo. The research findings imply that a bidirectional understanding of the Sapir-Whorf hypothesis is the correct one. This is achieved both through analysis of historical events and linguistic development which emphasize the speaker's role in language development and through the study of societal values that are reinforced through linguistic practices, namely taboo.