Investigation Board — The Post-Flood Problem
Genesis 6:4 · Genesis 7:21-23 · Numbers 13:33
The Flood account states that all flesh outside the ark died. Numbers 13 reports Nephilim in Canaan centuries later. Both cannot be simple, so one is not.
The contradiction, stated plainly
Genesis 7:21-23: every living thing on the face of the ground was destroyed; only Noah and those with him in the ark remained. Numbers 13:33: 'there we saw the Nephilim.' Genesis 6:4 has already hedged: 'in those days, and also afterward.'
Explanation 1 — a second incursion (textual inference)
'And also afterward' signals a repeat event post-Flood. Grounded in the verse; unnarrated anywhere else.
Explanation 2 — descent through a Flood survivor (later speculation)
The trait passed through one of the wives aboard the ark. Nothing in the text says or implies this; it is an inference invented to solve the problem.
Explanation 3 — terminology reuse / exaggeration (textual)
The frightened scouts used 'Nephilim' the way one might say 'monsters' — a byword for overwhelming enemies. Supported by the narrative explicitly calling their report an evil report.
Explanation 4 — local rather than global Flood (textual/theological)
If the Flood judgment is read as covering the known world of the narrative rather than the entire globe, survival elsewhere is unremarkable. A live reading among many interpreters, and independent of the Nephilim question.
Explanation 5 — literary and theological function (textual)
Genesis 6:1-4 functions as a statement about transgressed boundaries and the corruption prompting judgment; Numbers 13 uses the same word to signal a boundary-crossing terror the spies would not face in faith. The word carries theological weight rather than a genealogical claim.
Case status
OPEN. Explanations 1, 3, 4 and 5 are readings of the text. Explanation 2 is later speculation. No explanation resolves every difficulty, and the archive does not choose one for you.