Genesis 2:8-11

8And the LORD God planted a garden in Eden, in the east, where He placed the man He had formed. 9Out of the ground the LORD God gave growth to every tree that is pleasing to the eye and good for food. And in the middle of the garden were the tree of life and the tree of the knowledge of good and evil.

10Now a river flowed out of Eden to water the garden, and from there it branched into four headwaters:

11The name of the first river is the Pishon; it winds through the whole land of Havilah, where there is gold.