Summary: provide explicit definitions or discussions of social classes like the caste system. The early hymns in the Rig-veda mainly focus on praising the gods, and while terms like "Brahman" and "priest" are used, they are not clearly defined as specific social classes. The hymns show a connection between the poets who composed them and the priests who performed rituals, indicating a merging of roles rather than distinct castes. The hymns emphasize the value of these compositions and their acceptance by the gods, reflecting a spiritual rather than a social distinction. Later hymns may offer more explicit references to social classes, but the early Rig-vedic hymns do not provide concrete evidence of a well-defined caste system at their time of composition.