'Heart' in the Bible

Blessed (happy, prosperous, to be admired) is he who reads and those who hear the words of the prophecy, and who keep the things which are written in it [heeding them and taking them to heart]; for the time [of fulfillment] is near.

So remember and take to heart the lessons you have received and heard. Keep and obey them, and repent [change your sinful way of thinking, and demonstrate your repentance with new behavior that proves a conscious decision to turn away from sin]. So then, if you do not wake up, I will come like a thief, and you will not know at what hour I will come to you.

To the degree that she glorified herself and reveled and gloated in her sensuality [living deliciously and luxuriously], to that same degree impose on her torment and anguish, and mourning and grief; for in her heart she boasts, ‘I sit as a queen [on a throne] and I am not a widow, and will never, ever see mourning or experience grief.’

“And behold, I am coming quickly. Blessed (happy, prosperous, to be admired) is the one who heeds and takes to heart and remembers the words of the prophecy [that is, the predictions, consolations, and warnings] contained in this book (scroll).”