Verses about 'working hard'
For God is not unrighteous to forget your work and labour of love.
Hebrews 6:10
The labour of the righteous tendeth to life the fruit of the wicked to sin.
Proverbs 10:16
The thoughts of the diligent tend only to plenteousness; but of every one that is hasty only to want.
Proverbs 21:5
Go to the ant, thou sluggard consider her ways, and be wise.
Proverbs 6:6