My health may fail, and my spirit may grow weak, but God remains the strength of my heart; he is mine forever. (Psalm 73:26 NLT)
They say that the only things that are certain in life are death and taxes, but apparently they haven't heard about our God. Once you're in a relationship with Him through His Son Jesus Christ He is yours and you are His "forever." Everything around you or in you may fail, but He will never fail you or leave you!