Where does it say in the bible that being idle is a sinful state?

The Bible has a great deal to say about laziness. Proverbs is especially filled with wisdom concerning laziness and warnings to the lazy person. Proverbs tells us that a lazy person hates work: “The sluggard's craving will be the death of him, because his hands refuse to work” (21:25); he loves sleep: “As a door turns on its hinges, so a sluggard turns on his bed” (26:14); he gives excuses: “The sluggard says, ‘There is a lion in the road, a fierce lion roaming the streets’” (26:13); he wastes time and energy: “He who is slothful in his work is a brother to him who is a great waster” (18:9 KJV); he believes he is wise, but is a fool: “The sluggard is wiser in his own eyes than seven men who answer discreetly” (26:16).