The present work makes a humble reappraisal of the observations of Vedic seers on the origin and evolution of first speech on this planet. Findings here set aside conventional notion regarding the origin of speech and tries to present the actual picture behind the caption 'Divine Origin of Speech.' This work also attempts to discover the sequence of origin of various phonemic sounds. The first ever origin of action sounds and their development into attributives and final culmination into agent sounds. It also underlies those rules that determine the origin of other languages of Indo-European stock from their original source directly or indirectly. The present work also takes into account various phonetic theories evolved by various linguists from time to time in the light of new findings of the present study.