The preposition pros is one of Greek's most versatile spatial-relational words, governing accusative, dative, and (rarely) genitive cases with distinct nuances. In the New Testament it overwhelmingly takes the accusative, expressing movement toward a person or place. The prologue of John's Gospel famously declares the Word was 'pros ton theon' — toward God, with God, face-to-face with God — compressing directional, associative, and relational force into two words. Beyond its spatial core, pros extends to purpose ('for the sake of'), companionship ('with'), proximity ('at, beside'), opposition ('against'), and conformity ('according to'). Its semantic breadth makes it indispensable for expressing the full range of interpersonal and theological relationships in the epistles and Gospels.