Bible Verses About Heart: Unclassified scriptures descriptive of the seat of the affections

And thou shalt love the LORD thy God with all thine heart, and with all thy soul, and with all thy might.

And these words, which I command thee this day, shall be in thine heart:

¶ A merry heart maketh a cheerful countenance: but by sorrow of the heart the spirit is broken.

¶ The heart of him that hath understanding seeketh knowledge: but the mouth of fools feedeth on foolishness.

¶ All the days of the afflicted are evil: but he that is of a merry heart hath a continual feast.

The heart is deceitful above all things, and desperately wicked: who can know it?

I the LORD search the heart, I try the reins, even to give every man according to his ways, and according to the fruit of his doings.

But those things which proceed out of the mouth come forth from the heart; and they defile the man.

For out of the heart proceed evil thoughts, murders, adulteries, fornications, thefts, false witness, blasphemies:

These are the things which defile a man: but to eat with unwashen hands defileth not a man.

For when the Gentiles, which have not the law, do by nature the things contained in the law, these, having not the law, are a law unto themselves:

Which shew the work of the law written in their hearts, their conscience also bearing witness, and their thoughts the mean while accusing or else excusing one another;)

In the day when God shall judge the secrets of men by Jesus Christ according to my gospel.