1 Corinthians 9:10

10 Or saith he it altogether for our sakes? For our sakes, no doubt, this is written: that he that ploweth should plow in hope; and that he that thresheth in hope should be partaker of his hope.

Ver. 10. Should plough in hope ] Of maintaining his life by his labour, which is therefore called "the life of our hands," because it is upheld by the labour of our hands: Ludit, qui sterili semina mandat humo. (Propert.)