The heart means love. A good heart means love to the Lord and to the neighbor, while a hard or stony heart means the love of self or the world -- riches and things. When the psalmist asks the Lord to search his heart, he wants the Lord to see what it is that he loves. And we are what we love. What we eat may form our earthly body, but it's only temporary, what we love forms our spiritual body, beautiful or ugly as we have chosen. It's interesting to note that the first multi-cellular motion of our embryo is the pulsating that starts in a twist of blood vessel that is to become our heart, and the last motion of our natural body is our heartbeat. It is there for all of our natural life. And of course there is a beating heart in our spiritual bodies when we come to put them on.

9. In the Word there is a spiritual sense which is called its internal sense.

No one can know what is the spiritual or internal sense of the Word unless he knows what correspondence is: 2895, 4322. Every single thing which is in the natural world, right down to the very least thing, corresponds to something spiritual, and so signifies it: 1886-1889, 2987-3003, 3213-3227. Spiritual things, to which the natural things correspond, appear in nature under another guise, with the result that they are not recognized: 1887, 2395, 8920. Hardly anyone knows where divine quality is in the Word, though it is there in its internal or spiritual sense, the existence of which is not known today: 2899, 4989.

What lies hidden in the Word is nothing other than what its internal or spiritual sense contains, in which the Lord, the glorification of His human form, His kingdom, and His Church are dealt with, and not natural things, which are of the world: 4923. In very many places the prophetical elements are not understood, and so are of no benefit, without the internal sensefrom examples in 2608, 8020, 8398 just as what is signified by the White Horse in the Book of Revelation, from 2760. What is meant by the Keys of the Kingdom of Heaven given to Peter: Preface to Genesis 22 and 9410. What is meant by flesh, blood, bread, and wine in the Holy Supper: 8682. What is meant by the prophecies of Jacob concerning his sons: Genesis 49 and 6306, 6333-6465. What is meant by many other prophecies about Judah and Israel which do not match with [aspects of] that nation, and do not coincide with one another in their literal sense: 6333, 6361, 6415, 6438, 6444. In addition there are very many others: 2608. Further, what is said about correspondence may be seen in the work Heaven and Hell, 87-115, 303-310.

Concerning the internal or spiritual sense of the Word in general: 1767-1777, 1869-1879. There is an internal sense in every single part of the Word: 1143, 1984, 2135, 2333, 2395, 2495, 2619. These ideas do not appear in the literal sense but still they are in it: 4442.