Genesis 7:8
Of clean beasts, and of beasts that are not clean, and of fowls, and of every thing that creepeth upon the earth,
Cross-reference
Genesis 7:14
Parallel
Genesis 7:14 lists the animals entering — a parallel description of the same event as 7:8.
Genesis 7:2
Parallel
Genesis 7:2 commands seven pairs of clean animals — here in 7:8, the narrative says 'two and two' for all, a textual variation.
Genesis 6:19
Parallel
Genesis 6:19 is God's command to bring two of every kind — here in 7:8, Noah obeys exactly as commanded.
Genesis 6:20
Parallel
Genesis 6:20 repeats the command for two of every sort — Noah's obedience in 7:8 fulfills this.
Acts 10:12
Contrast
In Acts 10:12, Peter sees all kinds of animals — contrasting with the clean/unclean distinction in Genesis 7:8, later declared obsolete.