Genesis 2:5

2:5 Now no shrub of the field had yet grown on the earth, and no plant of the field had yet sprouted, for the Lord God had not caused it to rain on the earth, and there was no man to cultivate the ground.

Genesis 7:4

7:4 For in seven days I will cause it to rain on the earth for forty days and forty nights, and I will wipe from the face of the ground every living thing that I have made.”