My flesh and my heart may fail,
but God is the strength of my heart and my portion forever.
Psalm 73:26

"The instrament God is most concerned about is your heart"

Delight yourself in the LORD
and he will give you the desires of your heart. Psalm 37:4

This song has been in my heart for the past few months.

Where is your heart at?

But store up for yourselves treasures in heaven,
where moth and rust do not destroy,
and where thieves do not break in and steal.
For where your treasure is, there your heart will be also.
Matthew 6:20-21

Above all else, guard your heart,
for it is the wellspring of life. Proverbs 4:23