Ecclesiastes 7:10

7:10 Do not say, “Why were the old days better than these days?”

for it is not wise to ask that.

Ecclesiastes 7:21

7:21 Also, do not pay attention to everything that people say;

otherwise, you might even hear your servant cursing you.

Ecclesiastes 8:11

8:11 When a sentence is not executed at once against a crime,

the human heart is encouraged to do evil.

Ecclesiastes 11:2

11:2 Divide your merchandise among seven or even eight investments,

for you do not know what calamity may happen on earth.