Proverbs 13:12 Hope deferred maketh the heart sick: but when the desire cometh, it is a tree of life.
The original, innate, inbred, and God-created desire deep within every human being is the lost desire and inner yearning for the tree of life. The tree of life is lost and gone from human access; after we fell into sin we were kept out of the garden and banned from the tree of life.
Jesus is the Tree of Life: He died on the tree of death to open up Paradise for us and grant us free and unfettered access to the tree of life, Jesus Himself. The Desire of the Ages has come into our sin-and-death-sick world, and He has filled the empty, inner longing for something more, something better, something solid, something eternal. We know there is more. We know something is missing, but we don’t know what it is, and we can’t find it in the world. So Jesus found us and gave it to us. It is the Tree of Life.
For this reason, He is the “desire that cometh,” the “hope fulfilled.” Unfortunately, during this life we get heartsick from hope deferred, unfilled dreams, and disappointed desires, but the “tree of life” never fails. “How will he not with him also give us all things?”