Doing the will of God…

That man, indeed, is in danger who does not throughout his whole life place before himself the will of God as his goal, so that in health he shows forth the labor of love by his zeal for the works of the Lord and in sickness displays endurance and cheerful patience. The first and greatest peril is that by not doing the will of God, he separates himself from the Lord and cuts himself off from fellowship with his own brothers; second, that he ventures, although though undeserving, to claim a share in the blessings prepared for those who are worthy.
–Saint Basil the Great (330-379)