Isaiah 40:29-31. One of the greatest of all spiritual truths is “God can and does bring life out of death.” We who were born into spiritual death, may be born anew unto life eternal. This is the first and greatest spiritual truth that we need to appropriate for ourselves, but there is one which follows. As soon as we discover that we have life, whether in the spiritual or physical realm, we discover that there is a need for strength (energy) to live that life. The prophet Isaiah declares that He who gives life is also He who can continually renew it.