'Slow' in the Bible

The Lord is slow to anger and rich in faithful love, forgiving wrongdoing and rebellion. But He will not leave the guilty unpunished, bringing the consequences of the fathers’ wrongdoing on the children to the third and fourth generation.

But if you are slow in driving out the people of the land, then those of them who are still there will be like pin-points in your eyes and like thorns in your sides, troubling you in the land where you are living.