In Genesis 7:8, the same categories of animals (clean/unclean, birds, reptiles) come to Noah — exactly matching the sheet's contents in Acts 10:12.

In Genesis 9:3, God gives permission to eat all animals — directly prefiguring the vision that removes dietary restrictions.

In Leviticus 11:2, dietary laws restrict clean animals — the vision directly overturns those restrictions.

In Deuteronomy 14:3, eating detestable things is forbidden — the vision cancels that prohibition.