'Slackness' in the Bible

“When you make a vow to the Lord your God, you shall not delay to pay it, for He will most certainly require it of you, and a delay would cause you to sin.

Through indolence the rafters sag, and through slackness the house leaks.

from the sound of the stamping of the hoofs of his stallions, from the clattering of his chariots, the noise of their wheels. Fathers do not turn to [their] children because of [the] slackness of [their] hands.

“Cursed is the one who does the work of the Lord negligently,And cursed is the one who restrains his sword from blood [in executing the judgment of the Lord].