# In the six hundredth year of Noah's life

"When Noah was 600 years old"

# on the same day

This refers to the specific day when the rain began. This phrase emphasizes how all of these major events happened quickly when the time arrived.

# the fountains of the great deep burst open

"water from under the earth rushed up to the earth's surface"

# the great deep

This refers to the sea that was thought to be under the earth.

# the windows of heaven were opened

"the sky opened" or "the doors in the sky opened"