Genesis 10:8

And Cush begat Nimrod: he began to be a mighty one in the earth.

Cross-reference

Micah 5:6 uses 'land of Nimrod' to refer to Assyria, directly referencing the mighty hunter Nimrod from this verse.

1 Chronicles 1:10 repeats this exact genealogy verbatim, confirming Nimrod as Cush's son.