John Calvin, in his sermons on the book of Job:
When we be set at the table to drink and to eat, let us pray unto God, beseeching him of his gracious goodness, to keep us in such sobriety, that being nourished by his gifts, we may be the better disposed to serve him: so as our meats may not serve to overcharge us, but to sustain us, and to give us strength, that we may be the better able to occupy ourselves in the service of our God.
And that he will grant us the grace so to pass through these corruptible things, as we may always labor for the heavenly life, whereunto he calleth us by his word. For God maintaineth us not in this world to live for a day, or for ten, or for fifty years: but to the intent we should come to the said heavenly glory.
pg. 8 (Job 1:2-5)