"joyously giving thanks to the Father, who has qualified us to share in the inheritance of the saints in Light."
Through Christ, we are qualified to share in eternal life -- "the inheritance of the saints in Light." We are no longer under condemnation. We have no reason to fear the afterlife. This knowledge should fill the Christian with inexpressible joy, overflowing into grateful thanks to God the Father. Even in the hardships of life, we can give thanks. For we know there is something better to come. Our future looks bright.