Ecclesiastes 3
18 Ref I said in my heart, "As for the sons of men, God tests them, so that they may see that they themselves are like animals.
19 Ref For that which happens to the sons of men happens to animals. Even one thing happens to them. As the one dies, so the other dies. Yes, they have all one breath; and man has no advantage over the animals: for all is vanity.
20 Ref All go to one place. All are from the dust, and all turn to dust again.
21 Ref Who knows the spirit of man, whether it goes upward, and the spirit of the animal, whether it goes downward to the earth?"