The Nephilim (ˈnɛfᵻˌlɪm; נְפִילִים Nəfīlīm) are mysterious beings or people in the Hebrew Bible who are described as being large and strong. The word Nephilim is loosely translated as giants in most translations of the Hebrew Bible, but left untranslated in others. Some Jewish explanations interpret them as hybrid sons of fallen angels (demigods).
The main reference to them is in Genesis 6:1–4, but the passage is ambiguous and the identity of the Nephilim is disputed. According to the Book of Numbers 13:33, a report from ten of the Twelve Spies was given of them inhabiting Canaan at the time of the Israelite conquest of Canaan.
A similar or identical biblical Hebrew term, read as "Nephilim" by some scholars, or as the word "fallen" by others, appears in the Book of Ezekiel 32:27 and is also mentioned in the deuterocanonical books Judith 16:6, Sirach 16:7, Baruch 3:26–28, and Wisdom 14:6.
The Brown-Driver-Briggs Lexicon (1908) gives the meaning of Nephilim as "giants", and holds that proposed etymologies of the word are "all very precarious". Many suggested interpretations are based on the assumption that the word is a derivative of Hebrew verbal root n-p-l (נ־פ־ל) "fall". Robert Baker Girdlestone argued in 1871 the word comes from the hif'il causative stem, implying that the Nephilim are to be perceived as 'those that cause others to fall down'. Ronald Hendel states that it is a passive form: 'ones who have fallen', grammatically analogous to paqid 'one who is appointed' (i.e., a deputy or overseer), asir 'one who is bound' (i.e., a prisoner), etc.
The majority of ancient biblical translations – including the Septuagint, Theodotion, Latin Vulgate, Samaritan Targum, Targum Onkelos, and Targum Neofiti – interpret the word to mean "giants". Symmachus translates it as "the violent ones" and Aquila's translation has been interpreted to mean either "the fallen ones" or "the ones falling [upon their enemies]."
In the Hebrew Bible, there are three interconnected passages referencing the nephilim. Two of them come from the Pentateuch.