Proverbs 23:7

23:7 for he is like someone calculating the cost in his mind.

“Eat and drink,” he says to you,

but his heart is not with you;

Genesis 6:5

6:5 But the Lord saw that the wickedness of humankind had become great on the earth. Every inclination of the thoughts of their minds was only evil all the time.

Genesis 8:21

8:21 And the Lord smelled the soothing aroma and said to himself, “I will never again curse the ground because of humankind, even though the inclination of their minds is evil from childhood on. I will never again destroy everything that lives, as I have just done.

Jeremiah 17:9

17:9 The human mind is more deceitful than anything else.

It is incurably bad. Who can understand it?

Matthew 12:34

12:34 Offspring of vipers! How are you able to say anything good, since you are evil? For the mouth speaks from what fills the heart.