Genesis

The heart is deceitful above all things, and it is exceedingly corrupt: who can know it?

And Jehovah saw that the wickedness of man was great in the earth, and that every imagination of the thoughts of his heart was only evil continually.

And thou, Solomon my son, know thou the God of thy father, and serve him with a perfect heart and with a willing mind; for Jehovah searcheth all hearts, and understandeth all the imaginations of the thoughts. If thou seek him, he will be found of thee; but if thou forsake him, he will cast thee off for ever.

and walk in love, even as Christ also loved you, and gave himself up for us, an offering and a sacrifice to God for an odor of a sweet smell.