The Nephilim are mysterious figures mentioned in the Bible, specifically in the book of Genesis. They are described as the offspring of the "sons of God" and the "daughters of men." Their exact nature is debated, with some interpretations suggesting they were giants or fallen angels, while others view them as simply powerful humans. The term "Nephilim" is often translated as "giants" in some versions of the Bible. Their existence is linked to the pre-flood era, and they are associated with great wickedness. The story of the Nephilim raises questions about divine beings and human interaction in ancient texts.