The Rig-Veda is the most ancient scripture in the world comprising of Mantras which were revealed to various seers in a state of deep meditation (Tapas). These Mantras abide eternally in the Supreme Ether (Parame Viyoman) and hence are without a beginning. These Mantras are not composed by human beings. There are about 10,552 Mantras which are grouped into 1028 Suktas (Hymns) and covered under ten Mandalas of the Rig-Veda Samhita. These Mantras reveal the super sensory (intuitive) knowledge which cannot be acquired through the five senses of perceptions. However, this intuitive knowledge is revealed to only those who have purified their hearts through devotion in Truth. Those scholars, who have no devotion to Truth, do not derive real benefit from the Vedas by chanting Rik-Mantras and knowing their factual meaning. This book presents word-to-word meaning, English translation, and detailed commentary on few selected Suktas from the Rig-Veda Samhita. The aim of this book is to reveal the most fundamental doctrine of the Rig-Veda. There is only one Divine Power that is the basis of entire cosmic existence. This is the irrefutable doctrine of the Rig-Veda. This book will help the readers to comprehend the unfathomable depth of Vedic thought.