The Hebrew noun achor anchors a remarkably coherent semantic field around the concept of 'what is behind.' Because ancient Israelites oriented themselves facing east, what lay behind was the west, what came after was the future, and what was unseen was the back. When Jacob blesses Dan and prophesies that riders will 'fall backward' (Gen 49:17), when the psalmist declares that God is both 'before and behind' him (Ps 139:5), and when Ezekiel sees men turning their backs to the temple (Ezek 8:16), the same root illuminates spatial, temporal, and theological realities. The Spanish atrás and French en arrière capture the directional core, while the Arabic ukhur preserves the cognate relationship. Perhaps most striking is God showing Moses only his 'back' at Sinai (Exod 33:23), a passage where the physical and theological senses of achor merge unforgettably.